This classic Ecuadorian soup is made with a combination of onions, garlic, potatoes, annatto, cumin, milk, and queso fresco. The soup is simmered until the ingredients become fully cooked, and the cheese is then mixed in until it melts. Locro de papa is served hot, topped with chopped cilantro, diced avocado, and ají hot sauce, which is the reason why this hearty soup is especially popular on colder days.