Baby's palate starts to develop in the womb. Different flavors from Mom's diet are transmitted to baby through the amniotic fluid, and then through breast milk once he's born. Recent studies show that the foods baby was exposed to during pregnancy or nursing are the ones he tends to like. So if you love carrots, don't be surprised if your little one shares your opinion. But no matter what you ate during pregnancy, baby is born with a sweet tooth. He'll love that first bite of sweet pureed banana or applesauce.