Ancho is the dried version of ripe poblano chile peppers. The peppers are dried for preservation purposes, and when ground, they can be used in spice rubs, moles, soups, salsas, and enchilada sauces. In their dried form, the heart-shaped ancho chiles have a wrinkled skin and a deep red color, their flavor is smoky, sweet, and reminiscent of plums and raisins, while the heat level ranges from mild to medium.