If you are using dried beans, cook them and save the bean broth.
Gather black beans, 1 cup low sodium vegetable broth, ½ medium yellow onion, ½ red bell pepper, garlic, oregano, ½ teaspoon chili powder, cumin, ½ teaspoon coriander, ¾ teaspoon ancho chili sauce, lime, and optional cilantro.
Heat medium-large pot or dutch oven over medium heat
Chop ½ medium yellow onion, ½ red bell pepper, and 2 clove garlic.
(Optional) Pick the leaves from the cilantro. Refrigerate the leaves.Chop the stems Squeeze ¾ teaspoon fresh lime juice.
Sauté onions and bell peppers in pot with olive oil until soft.
Add garlic, 1 teaspoon ground cumin, ½ teaspoon coriander, ½ teaspoon chili powder, 2 teaspoon Mexican oregano, ¾ teaspoon ancho chili sauce, and optional chopped cilantro stems. Cook until fragrant.
Add black beans with bean broth and 1 cup low sodium vegetable broth.Bring to a simmer over medium high heat. Remove about 1/2 cup of the soup. Puree with a blender, food processor, or blender until smooth. Be careful of steam escaping from the blender or food processor.
Add pureed soup, ¾ teaspoon fresh lime juice, and ½ cup corn to the pot.Bring to simmer.Season with salt and pepper. Serve with cilantro leaves and lime.