20 yrs from now, I can see an greenwashing-ad of artisan/craft macaroni where ecological considerates up-cycle used macaroni-straws exactly this way. They will have counter-cultural names (unless labeling upcycled garbage for what it is becomes counter cultural). There will be media enchantment all the way (until bankruptcy), everybody yearns for a solution to the threat that too much noodles in the ocean pose to fish.
I'm sure there will be a government grant for it that fleeces tax payers to fund the research. Then they'll realize that pasta is so fragile when uncooked that everyone's straws are breaking and it's a useless product...but someone will make millions from it.
Most of that is starch, which you can wash of by briefly putting the noodle in boiling water (a few seconds) and then washing under cold water for a minute or two, then letting it dry.
It could also be prevented by coating it in a wax, like Carnauba wax, which will hold stable at up to 80°C and is chemically friendly to water, so McDonalds and friends would only have to lower the temperature of their coffee a bit.
20 yrs from now, I can see an greenwashing-ad of artisan/craft macaroni where ecological considerates up-cycle used macaroni-straws exactly this way. They will have counter-cultural names (unless labeling upcycled garbage for what it is becomes counter cultural). There will be media enchantment all the way (until bankruptcy), everybody yearns for a solution to the threat that too much noodles in the ocean pose to fish.