Bluesnow's yukkuri vomit? Belch? Never seen it mentioned nor pictures of it, so I am posting a screenshot.
This was a head of lettuce that burned, so I fed it to the nearest yukkuri. She started crying, hopping around and passed green bubbles several times from her mouth. I tried it again and got the same results.
Just learned it's deadly. Two burned items killed a small C-class Alice. If they don't eat, you can either drop the food on them or drop them on the food and they gush green bubbles.
Giving them doughnuts *might* eventually heal them, but I didn't try it long enough to see. Fried food will immediately restore their health.
That picture is of an S-class kotamarisa, and I could tell she apologized (gomenasai). It was an accidental discovery; otherwise I'd never fed her burned food.
For me, Softalk makes it easier to comprehend the words, even if I don't sometimes know what they mean.