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Chris Coyier

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How You Get the Mentos into the Diet Coke
Chris Coyier · 2026-06-17 · via Chris Coyier
A bottle of Diet Coke placed on a wooden stump in a grassy area with a blue sky and distant playground visible in the background.

Did you think this was gonna be some grand metaphor blog post?

Nope.


You probably know: if you put Mentos in Diet Coke, it makes the carbonation go crazy and fizz shoots out of the bottle. It’s a “science” experiment akin to baking soda & vinegar volcano, freezing a banana in liquid hydrogen and shattering it, or playing with a bit of mercury in your hands. No? Just me?

Anyway. What do you picture in your mind when you think of getting that tube of Mentos into the Diet Coke bottle? I bet you don’t even really think of anything at all. You just do it or whatever. You put them in there.

Allow me to tell you, it’s not going to go good. In my experience children just cup them in their hands and try to funnel them in.

A hand holding several white candy pieces above a bottle of Diet Coke on a countertop.

Kid or adult, you’ll get half of them in a best. Then you freak out when the fizz starts come up and drop the rest, probably knocking over the bottle.

Maybe you’re like, bro, it’s a tube already, you just open one end and squoosh them out.

A hand holding a roll of Mentos candy positioned above a bottle of cola, ready for a popular soda and candy experiment.

I don’t blame you for trying, but it’s no dice. Big Mint™ has that paper wrapped on there too tight.

I’ve seen adults try to use basic kitchen gadgetry to try to luge them down in there, which is also just too failure prone. I’ve also seen YouTube videos with extraordinarily complex inventions to do this, crafted from wood and levers and tubes and whatnot. Too much.

Listen, this activity is already wasteful enough, we might as well do it right.

My idea is to drill a hole into each Mento and string them from a bit of wire.

A wooden workbench with a cordless drill, a box of drill bits, a roll of electrical tape, a pack of Mentos, and earbuds, set against a marble surface.

Probably just best to watch my sick video proving that my idea rules.

I used this online video editor thingy Kapwing to blur the faces (obviously, from the watermark). It’s not like ultra mission critical, I just prefer that. Looks like it missed a few frames. So it’s both impressive and not terribly reliable for one-shots.