A velvety, spicy soup that’s great on its own or with a sandwich.
Heat the oil in a medium saucepan over medium heat. Add the garlic, onions, jalapenos and 1/2 teaspoon salt and cook, stirring occasionally, until softened, about 6 minutes. Add the cumin and coriander and cook, stirring, until fragrant, about 1 minute. Add the chicken broth and black beans with their liquid. Increase the heat to medium high and bring to a boil. Reduce the heat to low and simmer, covered, for 10 minutes. Transfer about three-quarters of the soup to a blender and blend until smooth (be careful when blending hot liquids). Return the soup to the saucepan and season with salt. Serve topped with cilantro and sour cream.