Fry the potatoes, in batches, in hot oil over high heat until golden, then place them on a paper-lined plate and sprinkle with salt.
Slice the sausage into rounds or ovals, then stir-fry in a teaspoon of oil until golden and crispy.
Now, add the fries to the pan with the sausages.
Serve while still warm, with ketchup, mayonnaise, mustard, and aji amarillo paste.
