2teaspoonschipotle chili powderor 2 to 3 chipotle peppers
¼cupbalsamic vinegar
3tablespoonsWorcestershire sauce
½teaspoonsalt
½teaspoonground black pepper
Instructions
Heat the oil over medium heat in a large saucepan. Add the onions and cook about 10 minutes until translucent. Add the garlic and cook for 1 minute then pour in the beer and let it simmer for 2 minutes to burn off the alcohol.
Stir in the rest of the ingredients. Cook uncovered over medium heat for 20 to 3 0 minutes to concentrate the flavors.
Remove the saucepan from the heat and allow the sauce to cool down for 15 minutes or until no longer steaming hot. Working in batches, pour the sauce into a blender and puree until smooth (alternatively, you can use a stick blender and blend it right in the saucepan).