Yellow Chile Peanut Sauce

A fiery dip, made with ají amarillo (Peruvian yellow chiles), is the traditional sauce for anticuchos. Bolivians make a similar sauce, adding peanuts for extra richness, and that’s the version you’ll find here. Huacatay is an herb used widely throughout northern South America. A member of the marigold family, it has a flavor suggestive of parsley and mint. I’ve never seen it in the United States, but equal parts parsley and spearmint make a reasonable substitute.