The primary ingredient in traditional curry varies by region, but a common base is a blend of spices and herbs, often including turmeric, cumin, coriander, and chili. The mix of spices defines the flavor profile of the curry, and it can be combined with various ingredients such as meat, fish, vegetables, or legumes. Additionally, in many curry recipes, coconut milk, tomatoes, or yogurt are used to create a rich sauce that complements the spices. The diversity in curry formulations across different cultures contributes to its popularity and adaptability in global cuisine.