Use of Spices in the Mexican Cuisine. Mexican dishes get their flavors and aromas that are highly treasured in Mexican cuisine, from the herbs and spices that they are made with. Mexican cuisine is known for its unique flavors, indigenous herbs and spices, as well as colorful decorations.pazote is one of those rare spices, used to give flavor to foods like beans.Chile powder is an essential and inseparable seasoning in Mexican cuisine used in a variety of dishes and recipes like meat, poultry, stews, vegetable dishes and salsas.