Science underlying picky eaters?

This post from Personal Effects/American Farmer crossed my desk today, and while interesting, and something that I can in general go along with , I’d like to see some actual science references to go with it. 

Online research into bitter taste buds anyone?

WCB “ate” her first apples this weekend. On her own she discovered the ones we have delightedly harvested for the first time at this house (no cedar rust this year), and had to be stopped from biting once or twice every apple in the bins.  Given her own apple or 2, she bit, and *chewed* (gummed?) little pieces and “ate” bits of her OWN apples! [And only threw up once.]

This week – bananas, carrots, canned peas and sweet potato pieces are on the list to try as finger foods…