The most commonly used Mexican spices include garlic, oregano, cumin and chiles, so these are good choices for a cook to buy when preparing a Mexican meal. Not all spices used in Mexican cooking add spiciness to the dishes. The quality of the spices affects the flavor of the food.
Garlic is the most common Mexican spice and can be used when fresh, jarred or powdered. Garlic is frequently paired with onion powder and is most often used in salsa and taco seasoning. Oregano adds an earthy taste to Mexican dishes. Although cumin was first discovered in the Mediterranean, it is frequently used in taco seasoning and adds a bitter, toasty taste. Chiles come in many varieties and can add spiciness and subtle flavor to Mexican dishes, depending on the type of chile used.