Guajillo peppers are long, smooth-skinned dried chilies with a deep reddish-brown color and a flexible, leathery texture. They offer mild to medium heat with a complex flavor profile featuring notes of dried berries, green tea, and subtle smokiness. A staple in Mexican cuisine, guajillos are commonly rehydrated and blended into sauces, marinades, soups, and stews, adding vibrant color and balanced depth without overwhelming heat.