To make this Beef and Pinto Bean Chili gluten free, choose a certified gluten-free beer or replace the beer with additional beef broth. Also confirm that the beef broth, tomato paste, canned tomatoes, sour cream, and any packaged ingredients are labeled gluten free, since some brands may contain additives or be processed in shared facilities. If serving the chili with toppings or sides such as chips, cornbread, or tortillas, select certified gluten-free options as needed. For anyone with celiac disease or severe gluten sensitivity, use clean cookware, utensils, and serving tools to avoid cross-contact.