Aji peppers are a type of chili pepper commonly used in South American cuisine, particularly in countries like Peru and Colombia. They are known for their bright colors, which can range from yellow to red, and their distinct fruity flavor. Aji peppers vary in heat, typically measuring between 30,000 to 50,000 Scoville Heat Units, making them moderately spicy. These peppers are often used in sauces, marinades, and salsas, adding both heat and flavor to dishes. Aji amarillo, a popular variety, is frequently used in traditional recipes such as aji de gallina and ceviche. Their versatility makes them a staple ingredient in many regional cuisines.