Pepper School

That bright green sauce at every Peruvian restaurant is called ají verde — made with ají limo pepper, cilantro, garlic, and lime. Here's what's in it, why it's so good, and how to get it at home.

If you have ever eaten at a Peruvian restaurant and found yourself trying to identify the flavor hiding in the sauce — that bright, fruity, warm-but-not-burning heat you could not quite name — you were tasting ají amarillo.