Ingredients

1 cup black beans, picked over 

4 cups water 

1/2 teaspoon dried epazote 

1 garlic clove 

1 teaspoon coarse salt 

2 tablespoons vegetable oil or duck fat 

Preparation

Bring beans and the water to a boil in a medium saucepan over medium-high heat. Reduce heat; simmer until tender, about 1 hour. Add epazote, garlic, and salt; cook until beans are very soft, about 15 minutes. Set aside to cool in liquid.

Working in batches, puree beans (including garlic) in a food processor to form a fairly smooth paste, adding cooking liquid as needed. Heat oil in a large saute pan over medium-high heat. Add bean puree; cook, stirring, until the oil is incorporated, about 5 minutes. Serve hot.