Ambur Biryani is a famous rice dish from the town of Ambur in Tamil Nadu, India. It is made by cooking marinated meat (usually chicken or mutton) with spices, yogurt, and partially cooked basmati rice. The layers are then sealed with dough and cooked on low heat, allowing the flavors to blend together. Ambur Biryani is known for its unique taste, which comes from the use of a special spice blend called 'Ambur Biryani masala' and the addition of caramelized onions.