below is some info from http://www.femail.com.au/foods_breastfeeding.htm;
foods can cause mild reaction such as spicy foods, cabbage, chocolate and foods high in C concentrate. It will depend on your own body and the sensitivity of your baby. Foods such as cabbage, garlic, chilli & curry may cause your baby to experience discomfort with wind.. However you baby's tolerance may improve as he/she gets older so you may be able to re-introduce that food. Other foods & drinks to watch out for are; pineapple/juice (being the worst offender) and other vitamin C rich fruits such as oranges, tomatoes, grapefruit and lemon, that can cause your baby to get a nappy rash. . Moderate your caffeine intake, a small amount is fine, but too much can interfere with your baby's sleep, or make him/her fussy. Keep in mind that caffeine is found in some sodas, teas, and over-the-counter medicines, as well as in coffee.
at 7:46 PM on Feb. 21, 2010