Salsa de rocoto is a hot Peruvian sauce or dip that's a staple at most tables in the country. It is prepared with fiery red rocoto peppers, oil, and lime juice, with the occasional addition of parsley, cilantro, or milk. Due to the fact that this salsa is so popular in the country, there are numerous variations, ranging from medium hot to insanely hot, so be careful when trying it for the first time.