Steps
1. Boil the potatoes in salted water until tender (about 20 minutes). Peel and slice them once cooled.
2. In a blender, combine the aji amarillo, queso fresco, evaporated milk, garlic, salt, saltine crackers, and vegetable oil. Blend until smooth and creamy. Adjust thickness with more milk if necessary.
3. Arrange lettuce leaves on a plate and place the sliced potatoes over them.
4. Pour the Huancaina sauce generously over the potatoes.
5. Garnish with slices of boiled egg and black olives if desired.
6. Serve chilled or at room temperature.