Pasilla peppers are a type of chili pepper commonly used in Mexican cuisine. They are long, dark green to black in color and have a wrinkled appearance. When dried, they are known as chilaca peppers. Pasilla peppers have a mild to medium heat level, typically ranging from 1,000 to 2,000 Scoville Heat Units. These peppers are often used in sauces, salsas, and mole dishes, adding a rich, smoky flavor. They can be found fresh or dried in grocery stores and are a popular ingredient for enhancing the taste of various recipes, making them a staple in many kitchens.