Onion salan or the restaurant biryani gravy onion salan is commonly known as hyderabadi biryani sauce/salan. This is a very popular gravy based preparation accompanied with the scrumptious and wholesome hyderabadi chicken biryani or mutton biryani. The onion salan is mildly spiced gravy made with an amalgamation of roasted peanuts, sesame seeds, and dry coconut, made into a smooth paste and cooked with spices; lightly sautéed onions added in with little tamarind juice to give that extra punch. This combination of food is a traditional hyderabadi dish prepared in wedding and special occasions especially most muslim homes.