01 - 
                Add the canned beans, chipotle peppers, onions, garlic, vegetable stock, salt, and oregano into a large blender. Blend until the black bean sauce is silky smooth.
              
              
              
                02 - 
                Heat a medium pot or skillet over medium-high heat. Add 1 tablespoon of oil and pour in the bean sauce. Cook, stirring frequently, until the mixture is hot and bubbly, about 5 minutes. (If the sauce gets too thick, add some water or broth and mix it in.)
              
              
              
                03 - 
                To fry (optional): Fill a large sauté pan with about ½ inch of oil and heat over medium-high heat until the temperature reaches 350°F. Fry each tortilla for about 15 seconds and transfer to paper towels. If not frying, heat up the corn tortillas in a skillet or microwave until warm and pliable.
              
              
              
                04 - 
                Dip each tortilla into the bean sauce. Transfer to a plate and fill with queso fresco. Roll it up like an enchilada, or fold it over like a taco.
              
              
              
                05 - 
                Serve immediately topped with sliced red onions, fresh cilantro, and Mexican crema.