Foods that are in conflict with pineapple 1. Pineapple-eggs are in conflict with each other. Eggs contain a lot of protein; pineapples are rich in fruit acid. If the two are eaten at the same time, the fruit acid can coagulate the protein, affecting the digestion and absorption of the protein, which is not good for health. Second milk is similar to soy milk, so it is best to drink soy milk after an hour