Salsa a la Huancaína (Huancaína sauce) is typically served over cold sliced potatoes in the well-known Peruvian dish Papas a la Huancaína. Made with aji amarillo peppers, it is a versatile sauce that goes with many dishes and flavours. Serve it as a dipping sauce for bite-size boiled potatoes or raw vegetables. You can adjust the spiciness by using fewer or more yellow chilli peppers.