Papa a la Huancaina is a Peruvian appetizer from the region of Huancayo. The creamy spicy sauce is poured over cold slices of potato, a bed of lettuce and garnished with black Peruvian olives and boiled egg.
If using whole ají amarillo chiles, thaw them if necessary. And begin by slicing them in half. Remove the stem and seeds.
In a small sauté pan, set over medium heat, add a teaspoon of oil, reserving the rest of the olive oil. Cook the ají amarillo chiles until softened. Transfer to a blender. If you're using paste, you can simply add the paste to a blender and proceed as instructed below.
To the same small sauté pan, add the onion, garlic, and pinch of salt. Cook until mostly softened, about 3 to 4 minutes. Transfer to the blender, along with the cubed queso blanco, evaporated milk, and ground turmeric (if using); blend until mostly smooth. With the blender running, slowly add about a tablespoon of olive oil. Add about 3 to 4 crushed saltine crackers and blend again until it reaches a thick rich consistency. Add another cracker if the consistency seems too thin. Salt to taste.
For Serving:
Slice the peeled potatoes into 1/4-inch slices. To plate the dish, arrange the leaves of lettuce on a large plate. Fan the sliced potatoes atop the lettuce, and pour the sauce over the potatoes. Garnish with eggs and olives.
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Notes
Tips and Tricks:
What should I use if I can't find aji amarillos? You can use scotch bonnet or another red/yellow colored pepper.
Where can I find aji amarillos? You can often times find aji amarillos in any Latin market. I like to buy them in the frozen department. This way I can thaw what I need. You can also buy the paste on Amazon.
What if I can't find queso fresco? In a pinch you can always use feta cheese. It will have more of a tart flavor to it so I would only use this as a last option.
Can this sauce be frozen? Yes! It's a really good sauce to freeze. I would freeze it for up to 3 months.
To Make Ahead:All of these components can be made up to 3 days before and kept in the fridge. You can assemble everything when you're ready to serve.