kmthu said: What's the "DO NOT EAT" thing in packaged foods, what's in it and how does it work? Thanks!
It’s silica gel…an artifical form of silicon dioxide (the same stuff that makes up sand) that has tons of tiny pores that have affinities for water. Silica gel can absorb around 40% of its weight in water. It’s manufactured to be entirely dry and then placed in food or other products that manufacturers don’t want to get moist in humid climates (slightly moist chips are what we in the real world call “stale.”) Water would rather be in the silica matrix than the food matrix, so that’s where it goes, keeping the food nice and dry.
And if you’re wondering why you shouldn’t eat it…it’s just because it’s not technically food. It’s not dangerous though…it’s just fancy sand.