Make Ahead Tip: Prepare through Step 3. Cover and refrigerate for up to 5 days or freeze in an airtight container for up to 6 months. Stir in cilantro and lime juice just before serving.
Shopping tip: Ancho chile, a dried poblano pepper, is one of the most popular dried chiles used in Mexico. It has a mild, sweet, spicy flavor. Find ground ancho chili powder in the specialty spice section of large supermarkets.