this post was submitted on 21 Oct 2025
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Drinking coffee from a cup made of coffee (www.youtube.com)
submitted 1 month ago by otters_raft@lemmy.ca to c/videos@lemmy.world
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[–] sga@piefed.social 5 points 1 month ago (1 children)

while true, they are effectively single use (in latter half of video, he slices open a cup, and shows cracks developing). these are, in theory, replacements for platic temporary cups. and the coffee grounds are essentially just a binder used in agar mix to harden it (kinda like adding wodden chips in some glue mix to make it hard).

[–] deafboy@lemmy.world 3 points 1 month ago (1 children)

coffee grounds are essentially just a binder used in agar mix to harden it

Oh, yes. I forgot about the agar. Is this the same thing that's used as a food for bacteria in a petri dish?

[–] sga@piefed.social 2 points 1 month ago

yesnt. agar is not exactly the food (it is one part of the food). we usually add other nutrients as well. consider agar like a staple bread (povides structure).