Chicken Tortilla Soup

Heat olive oil in a soup pot over medium-high heat. Add diced chicken and sauté until browned, about 4 minutes. Remove from pan and set aside. Reduce heat to medium and add onions, celery and carrot. Sweat vegetables for 5 minutes, until onions are translucent. Stir in cumin, coriander, chili powder, garlic and jalapeño, if using, and stir for one minute. Add tomatoes and water (or beer) and br