black bean soup
Heat oil in large pot over medium heat. Add onion, garlic and thyme; sautee until onion is golden, about 8 minutes. Add beans, reserved 1 cup bean liquid, broth, tomatoes with juices, cumin and hot pepper sauce. Bring soup to boil. Reduce heat to medium-low and simmer until flavors blend and soup thickens slightly, stirring occasionally, about 20 minutes.
Working in 2 batches, puree 2 1/2 cups soup in blender until smooth. Mix puree back into soup in pot. Season with salt and pepper. Ladle soup into bowls.
source: Bon Appetit June 1999, via Epicurious