PAPA ALA HUANCAINA

this is the description I've found in WIKIPEDIA about this delicious dish

Papa a la Huancaína (literally, Huancayo(city in Peru) style potatoes) is a Peruvian salad of boiled yellow potatoes (similar to the Yukon Gold potatoes) in a spicy, creamy sauce called Huancaina sauce. It is typically served over lettuce leaves and garnished with black olives and hard boiled egg quarters.

The sauce is made of fresh white cheese (similar to farmers cheese), vegetable oil, aji amarillo (yellow Peruvian pepper), evaporated milk and salt mixed in a blender.
This salad is served cold, as a starter.
Here, a photo slide of the day I made it. Enjoy!