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By Tarde
I'm thinking of a cup that will not have any liquid or waste that would otherwise need to be washed out. By using hydrophobic nanotechnology, it may be possible to make a safe food grade cup or bowl that will leave no mess and reduce waste.

Challenges: heat resistance, coating durability, food grade, .....

Tell me what you think because I am sick of washing up and having half my Milo sticking to the side of a cup.
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