What do you mean?
If you mean food likes/dislikes then there is none as v5 characters do not have individual likes or dislikes.
But there are special foods that will help to do special things...
Balance Biscuit: Changes the large/dainamikku family back to normal.
Milk: Changes the petite/puchipuchi family back to normal.
Steamed Bun: Changes the ninja/shinobi family back to normal.
Sesame Pudding: Changes Hatugatchi/Hatsugatchi into Kuromametchi.
Girl's Dresser: Changes Watatchi into Makiko.