From American Baby magazine, here's the lowdown on a few food flavors and how much time they take to influence what your baby's tasting:
Coffee: 15 to 60 minutes
Garlic: 2 hours
Carrots: 2 to 3 hours
Mint: 4 to 6 hours
Bananas: Never - their taste doesn't influence the milk's taste at all!
Did you have a glass of wine with lunch? It takes 30 to 90 minutes for it to reach breast milk. Ice cream for dessert? Cow's milk proteins, to which some infants are sensitive, takes 1 to 2 hours.
(Image: Faith Durand)