【How-to】What is the spiciest salsa at chipotle

Chipotles range in heat from 2,500 to 8,000 Scoville units, making them much hotter than ancho chiles (1,000–1,500 SHU) but milder than tiny red chiles de árbol (15,000–30,000 SHU). The distinctive flavor of a chipotle is smokiness, but underneath the smoke and heat, chipotles are also sweet.