Rigatoni a la huancaina is a cheap Peruvian-inspired meal that can be served as a main or as a side dish. Huancaina is a Peruvian sauce made with aji amarillo (yellow chilli) that is traditionally served with boiled potatoes. Somewhere in time, perhaps around the 80s or 90s, huancaina found its way away from the humble potato and became a dip for yuquitas fritas (cassava chips), Peruvian corn skewered in toothpicks and other finger food (as can be seen in the photo of my recipe for simple huancaina sauce. Around that time, huancaina also became a pasta sauce, typically for spaghetti. It is most often served with some protein such…