You can increase the amounts of chipotle peppers, but beware, they are HOT! My family loves this soup, if you love spicy foods then I urge you to give this a try. Serve this with crusty rolls and butter. Canned chipotle chilies or sometimes called adobo, can be found in any Latin-American markets, or specialty food stores and major grocery food stores in the Mexican section. You might want to double ingredients, this soup is so good!