A dish, biryani takes time and practice to make but is worth every bit of the effort. Long-grained rice flavored with exotic spices such as saffron is layered with lamb, chicken, fish, or vegetables cooked in a thick gravy.In biryani, meat and rice are cooked separately before being layered and cooked together. Pulao is a single pot dish: meat and rice are simmered in a liquid until the liquid is absorbed.