popcorn
I don't know what's "enough" or too much or anything, but I eat it once a week and I would guess I eat about one popped cup. It's popped corn/puffed up so it crunches down to not much. I could probably eat more than one cup, fullness wise, but that's what I've been sticking with at a time.
Everyone is different and every surgeon is different, but that's what's been working for me.
Good luck!
Holly