Guajillo chilies are a popular type of dried chili pepper commonly used in Mexican cuisine. They are known for their deep red color and smooth skin, measuring about 3 to 6 inches long. Guajillo chilies have a mild to medium heat level, typically ranging from 2,500 to 5,000 Scoville Heat Units, making them versatile for various dishes. These chilies have a rich, fruity flavor with hints of berry and tea, which enhances sauces, salsas, and marinades. They are often rehydrated before use, allowing their unique taste to infuse into recipes. Guajillo chilies are a key ingredient in traditional dishes like mole and adobo.