Chipotle chiles are actually smoked and dried jalapeño peppers. They are widely used in the United States and Mexico for many culinary purposes. Chipotle sauce is commonly made from these chiles and has a powerful flavor, both spicy and sweet. It can be used as a dipping sauce or implemented into any recipe that requires chipotle sauce. It is very spicy and should be taste tested before using or serving to others. This recipe yields approximately 3 cups of chipotle sauce.
Combine the chipotle chiles with the guajillo chiles in a large bowl. Add hot water to the bowl until the chiles are submerged and let stand for 15 to 20 minutes or until soft. Drain the water.
Remove the stems and chop the chiles into small pieces. Add the onion and vegetable oil to a medium saucepan, and saute over medium heat until soft.
Add the chopped chiles, tomatoes, broth, vinegar, brown sugar, salt, pepper and cumin to the saucepan and mix well. Simmer the ingredients for 15 to 20 minutes, or until thick.
Transfer the chipotle sauce to a food processor and puree for one to two minutes, or until uniformly smooth. Pour into an airtight container, and place in the refrigerator.
Let the chipotle sauce sit for 16 to 24 hours before using, allowing the flavors to meld. Remove the from the refrigerator and warm to room temperature before serving.