Add oil and butter to a pot, once butter is melted, salt, pepper your shrimp then add it to the pot, give it some color (about 1 min ), then reserve it.
In the same pot add onions, garlic, paprika, ají panca paste, huacatay paste, and let it cook until the onions are soft almost falling apart.
Once the onion is fully cooked add the stock, add potatoes, rice, corn and let it cook until the potato and rice are done, then add peas, queso fresco (cheese), evaporated milk, shrimp and let it simmer for 2 minutes, add salt, serve with, a fried egg and some toasted bread.