What is it about "mainstream" food coloring that's not vegan? (I'm talking about the little boxes of four bottles you get for coloring your own stuff at home.) The ones I saw at the store last week listed propylene glycol and various numbered colors (red # whatever, etc.), which I thought were all vegan and not derived from animal sources, like carmine/cochineal.
How much does vegan food coloring run, in terms of the little bottles and all? And what are some natural, neutral-tasting colorings you would recommend? I know turmeric can give a yellow/orange coloring by adding just a small amount.
If any of this was in the memories, my apologies, because I totally didn't see anything.