The primary ingredient used in Thai curry is curry paste, which usually consists of a combination of spices, herbs, and aromatics. Common ingredients found in curry paste can include chili peppers, garlic, shallots, lemongrass, galangal, and kaffir lime leaves. There are various types of Thai curry pastes, such as red, green, yellow, and massaman, each differing in flavor and spice levels based on the ingredients used. To prepare a Thai curry, the paste is typically sautéed with coconut milk, proteins, and vegetables, resulting in a rich and flavorful dish that is a cornerstone of Thai cuisine.