Northern India, where the climate is cooler, is ideal for wheat production, and people who live in this area thrive on a daily diet of numerous kinds of bread with their curries. These are generally made from the same three ingredients: ground grains, salt and water. Unleavened flat breads - ranging from simple, fat-free chapatis to rich, layered parathas (similar to flaky pastry) -are made daily at home. Leavened breads such as naan, of which there are numerous varieties, are generally commercially made now, although they are still cooked on tandoors in some remote villages.