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Heavy Metals
April 12, 2026

Heavy Metals

Better than the actinides

Comments (133)

C
Chris M · April 13, 2026

I know I'm late but isn't Marten the one being a coffee snob by judging people on their coffee preferences?

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Candace Griffin-Campbell · April 13, 2026

I'm dying! 🤣

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Stephen Lindholm · April 13, 2026

Isn't cadmium toxic as hell?

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Rohan Graetz · April 13, 2026

The dialogue in this reminds me of the early comics with all the indie references

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Paul Lenoue · April 13, 2026

Sad to say, but pour over really does taste better, as does cold brew. The secret is to ask for it in a non-snobbish way.

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Claudia D. · April 13, 2026

Marrr-ten, how UN-chill of you.

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Chris Warren · April 12, 2026

The music snob knows how annoying snobs can be. :)

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Z31 · April 12, 2026

Thanks Jeph, now I've spent way too much time on Wikipedia and know more than I'll ever need to about Neutron Poisons.

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James R. Strickland · April 12, 2026

Wasn't this the guy who dressed in Victorian clothes to avert awkward moments? Like...15 years ago?

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enchantedsleeper · April 12, 2026

It was actually 15 minutes ago in-comic

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Jim Feldman · April 12, 2026

Aeropress anyone?

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Captain Button · April 12, 2026

Is that like making decaff with supercritical carbon dioxide extraction?

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Allan Widner · April 12, 2026

Idunno, some of us who love a, say: in-store roasted, light roast, Tanzania Peaberry espresso made with Monmouth IL deep aquifer water and a double shot of love will also happily throw a teaspoon of Nescafe in a cup of hot water and call it good. Also, my facial hair is NOT anachronistic - it's the hats that are anachronistic.

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Bobo Boom · April 12, 2026

I love using an Astatine tamper, although getting it replaced daily is a bit of a hassle

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Maurice Kessler · April 12, 2026

And no isotopes in my flat white!!!

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AJ Sharma · April 12, 2026

So Marten uses preground coffee and a percolator? He is really repping the whole slacker bit eh?

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Jim Feldman · April 12, 2026

At this point he barely competing with Timmy's

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Captain Button · April 12, 2026

Marten, I think it will reduce customer traffic if you require them to read through all those MSDSs before ordering...

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Bookbeard · April 12, 2026

It's all in the Mood Coffee Preferred Customer Club terms and conditions, section 69 subsection QΩ.4 paragraph 7.231-pistachio-5, just after "gremlin bite liability waiver". Most people just hit agree.

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Colamann · April 12, 2026

This hit a little close to home for me 🙈 But also, why would a coffee shop with a grinder buy preground beans 🤣

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Atashkada · April 12, 2026

Bottom right punchline be like "Marten has worked in the service industry" :-D

d
darklion · April 12, 2026

Use Beryllium! Then you don't have to call it a heavy metal anyway.

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Jim Feldman · April 12, 2026

AND the dust is WAY toxic

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enchantedsleeper · April 12, 2026

I was so confused that pour-over coffee is considered a ~fancy method of brewing when for me it's more like a quick and dirty cheat method that I use to cut out the time from the drip coffee machine. But then I read the beginning of an article talking about "manipulating flavours" and the way the water travels through the coffee grounds and oh, now I get it. Coffee fanciness isn't in the equipment, it turns out it's a state of mind x3

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Dave, Duke of Fridges · April 12, 2026

The difference is whether you own a v60 drip filter and a gooseneck adjustable temperature kettle or you're normal

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Steve DeGroof · April 12, 2026

This is Cubetown. It's literally crawling with lab equipment. I'm surprised Liz hasn't cobbled together half a dozen brewing rigs from spare parts.

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Colamann · April 12, 2026

Coffee brewed in a soxhlet apparatus would certainly kick. Might not be overly tasty, tho.

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Sparky · April 12, 2026

Marten needs a roaster; but the rest of his reasoning is sound. Scientific Coffee is rarely tasty. And he should offer aroma sittings. Just my 2¢.

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Leak · April 12, 2026

Surely nothing would beat a Cesium tamper? 🤔 https://www.youtube.com/watch?v=Vzk0noqkD8o

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Stephen Wells · April 12, 2026

Marten, take your socks off and you can make cafesinho do Brasil right now :)

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Slight Hiccup · April 12, 2026

I have literally never heard of pour-over coffee before though I have heard of cadmium and why you shouldn't drink it. We were an instant household (I anticipate someone preferring to drink cadmium).

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nthli.v · April 12, 2026

The cadmium tamper was the only thing on the list that was improbable for the pour over nerds - just about

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Ktulu · April 12, 2026

I mean.. I'm not a fancy man. My beard might be anachronistic, but my trouser are very much NOT avant garde and I do love my drip coffee. You don't have to be a pretentious asshole to like good coffee ;) You just have to be able to appreciate the small good things in life.

a
allanfranta · April 12, 2026

Thank you for wearing trousers, at least. Don't use a cadmium... anything, really, besides dampers in reactors, I guess.

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Julian Getz · April 12, 2026

I mean....Cadmium isn't....THAT bad...it's a little soft, but as long as you weren't powdering it, I imagine it wouldn't translate into the coffee too much being insoluble in water...if we have the whole periodic table to play in, I don't even know if it makes the list....if we're just talking metals...Cesium is still worse XD

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Mark Eichin · April 12, 2026

Cesium would let him contribute his share to cubetown's Recommended Daily Explosions quota :-) He could get a tungsten one, just to leave it on the counter and startle people who fidget with it?

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ellafine · April 12, 2026

Liz’s face in panel 3 is killing me

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Finvaara · April 12, 2026

Marten, buddy, your baggage is showing. If you want to run a coffee shop, you might have to sit down with the mechanics of what might or might not make coffee taste good and get past your prejudices to find out what is and isn't worth your time and money to invest in. If you can't be objective, there's probably a researcher around someplace that can help you set up a double-blind taste testing or three.

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enchantedsleeper · April 12, 2026

There might even be one standing right next to you xD

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Diptych · April 12, 2026

I think Marten may be projecting his own buried reservations about music snobbery onto coffee.

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ValdVin · April 12, 2026

Nice crop of Gremlin faces today, especially panels 3 & 4.

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John · April 12, 2026

The fancy-shamcy pour over setup looks like a chemist's setup. But... Oh, it would be sweet to have one...

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SpookyPenguin · April 12, 2026

For the amount i spent on my grinder and coffee machine (and the upgrades to the coffee machine) and the portafilter and the portafilter baskets and tampers and dosing rings and The Comb. don't get me started on the cleaning materials..what I'm saying is I have 2 cups a day for all of that. And now I have a tea habit.

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ellafine · April 12, 2026

I inherited a really nice grinder from my dad, and I just use that and a French press. (He had one of those countertop espresso machines too but I’ve never tried it out. )

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Dev · April 12, 2026

Wow, going back to the strip's roots with this one lol

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Populuxe · April 12, 2026

I have no idea what effect cadmium would have on coffee, but I trust Liz on this.

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Abhayakara · April 12, 2026

There's a big todo about cadmium in food crops in France right now which I'm sure Jeph is referring to. Btw I just learned that Jeph autocorrects to Neoh, which I don't know how to deal with at this hour of the morning. Time for a pour over.

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rThunderbolt · April 12, 2026

Isn't cadmium the chocolate egg people?

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Bookbeard · April 12, 2026

Yeah, but Cadmium Creme Eggs didn't sell very well. Not a lot of repeat customers for some reason.

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Danny Beans · April 12, 2026

Fluorine would be a pretty bad choice. For several reasons.

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Noah · April 12, 2026

Random: Is Derek Lowe on your radar? If not he has an entertaining article on Dihydrogen Diflouride: https://www.science.org/content/blog-post/things-i-won-t-work-dioxygen-difluoride (I’m not remotely a chemist, but he does know how to put words together)

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Simon Green · April 12, 2026

Cadmium tampers are for babies. Real men use polonium tampers.

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Jason Rock · April 12, 2026

But only once.

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Scott Christian Simmons · April 12, 2026

Wait--is Marten tricking Liz into taking a part-time job at his coffee shop? If so, that is either the best or worst idea I've ever heard, I can't decide.

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Bookbeard · April 12, 2026

Liz has already begun to learn the ways of the Emily. Lesson #1: getting accidentally hired in coffee shops. https://www.questionablecontent.net/view.php?comic=3106

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Carin Maja Brooks · April 12, 2026

Don't for get the alkali cone. Options like plastic or ceramic just don't have the right thermal properties

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Sean Kinlin · April 12, 2026

Marten, if you really want to be fancy, you do pour-under coffee.

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Paul Johnson · April 12, 2026

Clearly, coffee was not as good pre-cambian tampers. Heck, the plant didn't even exist in the precambrian era.

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Yelling Bird · April 12, 2026

Man, Marten's decorating aesthetic is rather Spartan.

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Auros Harman · April 12, 2026

What about a depleted uranium tamper? Extra heavy, for a solid THWACK on tamping it down.

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Sam Shores · April 12, 2026

Now, Marten, how much did you spend on that guitar again?

W
William Trethewey · April 12, 2026

It's a guitar, you don't buy by price, sound man, sound.

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Tudza · April 12, 2026

The Actinides. Ancient enemies of the Romans?

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Danny Beans · April 12, 2026

Brother of Menelaus!

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voyager-ngc5195 · April 12, 2026

I saw Heavy Metal Coffee and thought chat would be talking about tampers made from Tommi Iommi's Gibson SG. My bad.

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Adam. No, not that one. A different Adam. · April 12, 2026

So, I feel like making fun of men for having well-manicured facial hair is along the same lines as calling someone "metrosexual" because they moisturize.

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voyager-ngc5195 · April 12, 2026

Unfortunately, Martin's just angry he can't grow that kind of facial hair. You know, due to all the cadmium.

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Hugh Eckert · April 12, 2026

Astatine would be bad, too.

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Robert Wrigley · April 12, 2026

Considering that pour-over is probably the absolute cheapest way to brew decent coffee, kinda hard to consider it snobbish. $20 is pretty low entry point. ...of course, you then need to get a $80 blue-tooth enabled set of scales ... and a $120 PID controlled kettle...and then a $280 hand grinder with a heptagonal burr set ... and while you don't HAVE to have the $460 refractometer, how ELSE are you going to know what your extraction yield is? You don't want to be a savage, do you?

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Chauncey · April 12, 2026

$460 for a refractometer? Where are you getting your metrology equipment from? I use a sub $50 one at work. Granted, I only need to know the rough concentration of metal working fluid in my machines’ coolant. I try to keep it between 8-10% for best performance.

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Mad Marie · April 12, 2026

Ah, the Lanthanides and the Actinides: two houses, both alike in dignity, at the fair bottom of the periodic table, where we lay our scene...

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Joe · April 12, 2026

having just come from a performance of Henry V, I support this message. or at least the styling of it.

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Cizeta8088 · April 12, 2026

Arden Weenus approves!

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Noise · April 12, 2026

Of course, you haven't had REAL coffee until you've had Mechanicsburgh coffee.

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Drazi · April 12, 2026

I don't know how i feel that i know where that is. I'm old.

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Sean Kau · April 12, 2026

It would be hilarious for Marten to turn into James Hoffman https://youtu.be/G7xGhGtvYIs?si=iiDz3-LlQRFfu-2v

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Mark Eichin · April 12, 2026

Especially if he starts in the Wierd Coffee Science era https://youtu.be/j8J_0OTmXQg?si=1DYUo_eiANJlIEzN (my first intro to Hoffman) and instead of getting a grinder, gets a centrifuge :-)

J
John Anderson · April 12, 2026

You need a microscopic cell sorter to get really uniform coffee grounds.

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Timothy Roller · April 12, 2026

Hey, I don't have fussy facial hair.

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Sonic Druid · April 12, 2026

Would Marten say “Twelve thousand dollars” or “Twelve thousand bucks”?

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Miyaa · April 12, 2026

€ 10,234.24 for Liz’s sake. Or $ 16,611.24 CAD for Regret and Violence.

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Shannon Woodbury · April 12, 2026

The fact Martin only has drip filter coffee and not a proper double boiler espresso machine that can pull multiple shots at once, makes me wonder just how serious he is about this Cafe he's running. 🤔🤨

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Call me Ishmael · April 12, 2026

As serious as he's ever been about anything. That is to say, not very. (Claire excluded)

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DVW · April 12, 2026

FYI the first h in "headphone" in panel 3 is not italic like the rest of the sentence is

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SilverbackRon · April 12, 2026

I don't drink coffee so I don't really get this. I had to look it up and... aren't most coffee makers pour over? Ground coffee in basket, hot water runs over it and fills carafe below with coffee? Basically every Mr. Coffee ever made. Am I missing something? (yes, I realize there is other stuff like espresso pulls but that seems on the fancier side of things)

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Techdragon · April 12, 2026

At a very basic level they are similar in that both involve putting grounds in a vessel and then putting hot water to flow through the grounds. 'Pour over' generally refers to manually pouring the water at a slower and controlled rate to enhance certain parts of the brewing process, and can provide more nuanced flavor. Coffee machines (i.e.: Mr. Coffee) automate the process without any nuance and don't usually provide as complex a flavor.

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Benzy · April 12, 2026

Anachronistic facial hair... you bringing back Will?

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Bookbeard · April 12, 2026

Oh no, don't let the Northampton coffee hipsters hybridize with the Cubetown mad scientists. "Ugh, is that espresso tamper made from ordinary baryonic matter? So basic."

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Creeperkry · April 12, 2026

As opposed to acidic?

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Noah · April 12, 2026

Apropos of nothing, are folks here aware of Black Blood of the Earth coffee? No affiliation; heck, I don’t even drink coffee. I just know it exists. :)

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Creeperkry · April 12, 2026

Dang, is that a Big Trouble In Little China reference?

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Ben R · April 12, 2026

hmmm...Marten's been researching this

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Bookbeard · April 12, 2026

Yes, I suppose that's one way of saying "Marten spent several years practically living in the coffee shop that employs the vast majority of his social circle."

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Randall Norman Pick · April 12, 2026

No radium spoons for light roasts?

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Creeperkry · April 12, 2026

Ooh! Ooh! Marten should commission Faye to build him a coffee maker! https://www.questionablecontent.net/view.php?comic=1644

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Michael Steamweed · April 12, 2026

Martin absolutely should!

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Dean Reilly · April 12, 2026

Don't forget the gallium teaspoons!

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Captain Button · April 12, 2026

Why do I picture a coffee snob as the CoolGuy AnthroPC body? https://www.questionablecontent.net/view.php?comic=3540

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Joona Juselius · April 12, 2026

some of that making fun of indie music energy from Marten. The vibes remind of the old days

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Brendan Luster · April 12, 2026

love the coffee you're with not the coffee you want

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Am Queue · April 12, 2026

If you can't be with the coffee you love?

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Olaf · April 12, 2026

It's so funny to me that pour-over is supposed to be fancy now. It's how I used to make all my coffee when I was younger. I never got a coffee machine because why bother?

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jonesnori · April 12, 2026

Melitta!

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Clifton Royston · April 12, 2026

Pfffttt. Watta light-weight. Osmium is where it's at for toxic espresso tampers.

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Grace Serenity · April 12, 2026

You gotta try either depleted uranium or plutonium. The extra density helps the tamp without over pressing the grounds!

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BobC · April 12, 2026

Beware the actinides of March!

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Darnel D Cooper · April 12, 2026

Okay,... Cadmium tapper? I stand impressed, let me sit down.

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Crushbot (security*) · April 12, 2026

I feel targeted here...

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Ash359 · April 12, 2026

Cadmium is toxic

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Carl Fink · April 12, 2026

And Liz knows that.

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Jeff · April 12, 2026

As someone from the PNW, I can honestly say that most of the coffee snobs are probably doing homebrew with imported single origin beans and a flat burr grinder. Marten has nothing to worry about.

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enchantedsleeper · April 12, 2026

I sense that this is a real burn if you know anything about coffee xD

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Jon Wilson · April 12, 2026

A sodium tamper would conform to the puck to provide perfectly even pressure! And extra flavor (chloride feed sold separately)!

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Miyaa · April 12, 2026

Also how do you not have multiple coffee makers and an espresso machine?! Even my mother does this and she’s 80 and generally just drinks Vietnamese coffee!

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Carl Fink · April 12, 2026

He does very little business, apparently.

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Andrew · April 12, 2026

Potassium grinding wheels, for that “mouthfeel explosion”

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Zak Reichle · April 12, 2026

Read this as “Mouthfree explosion” and that’s horrifying

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Noah · April 12, 2026

The title of this one has freakish timing for me as I fell down the rabbit hole of Heavy Metal (the animated film) for a couple of hours earlier today.

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Wynn Donivan · April 12, 2026

One might say you Took a ride?

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Michael Steamweed · April 12, 2026

Cadmium?! Pft. Copernicium espresso tamper, or nothing at all!

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BobC · April 12, 2026

Isn't he the US football (gridiron) player?

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Magic Beans · April 12, 2026

The toxicity is part of the ✨experience✨

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Noah · April 12, 2026

Cue System of a Down… :)

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Orion Rhine · April 12, 2026

Just remember Marten, coarse ground is better than fine ground. You get a richer flavor and you won't clog up the machine.

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Timothy Roller · April 12, 2026

Depends on the machine, the temp, the water, how long the grinds touch the water... It's chemistry, it's never as simple as it looks.

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Gary Levine · April 12, 2026

Panel 3 Liz is best Liz.

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Wednesday · April 12, 2026

…good job I couldn’t afford that nifty xDuoo-collab preamp on Drop before Drop died. Assuming reality is fluid, I’d actually like to try Marten’s coffee someday.

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legobil · April 12, 2026

I can HEAR Martens derogatory voice in panel 3.

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Miyaa · April 12, 2026

I feel like the only thing left for Marten to be a coffee barista expert is wearing black pants.

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Zig Justice · April 12, 2026

Everyone knows OSMIUM is the way to go for a tamper

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Nikki · April 12, 2026

Plutonium does a nice job of pre warming the grounds.

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Jennifer Doyle · April 12, 2026

No one likes a coffee snob

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Timothy Roller · April 12, 2026

No one likes a snob snob, either. Only the finest snobbery will do.