Combining vegetables with fruit can cause digestive problems

Combinations : Combining vegetables with fruit or milk can cause digestive problems. One needs to be careful while eating or choosing food. Different combinations may be harmful. Its not advised to combine sour tastes with milk, eat cold items after ghee, eat equal amounts of ghee and honey, or eat fish products along with dairy (these unhealthy combinations create subtle toxins). Other aggravating foods are too hot and too cold, or too light and too heavy. Stew and curry are more digestible than individual vegetables cooked and eaten separately.

Vayu— the fewer combinations the better (they like combining foods, though it is not good for them).
Pitta— does best with combinations
Kapha— is between Váyu and Pitta