Black Mint Sauce is a spiced mint sauce made in Peru from black mint (aka Huacatay Mint.)
It is used as a condiment in cooking with meat, poultry, soups and salads.
You can buy it in jars.
Put in a food processor 1 fresh mirasol chile, seeded. Add some fresh, washed huacatay leaves, with a dash of salt, and a drizzle or two of vinegar and of oil. Whiz.