Game Day Chili

Name: Game-Day Chili
Ingredients: 1 Tbs. olive oil; 1 yellow onion, diced; 1 lb. (500 g) lean ground beef; 2 garlic cloves, minced; 1 tsp. chili powder; 1 tsp. ground cumin; 2 sweet potatoes, peeled and cut into 1/2-inch (12-mm) dice; 1/4 cup (2 fl. oz./60 ml) tequila (optional); 1 can (15 oz./470 g) black beans, drained and rinsed; 1 can (28 oz./875 g) diced tomatoes; 2 chipotle chiles in adobo sauce, minced, plus 1 Tbs. adobo sauce; 2 cups (16 fl. oz./500 ml) vegetable broth; Kosher salt and freshly ground pepper; Sliced avocado for serving; Sour cream for serving; Tortilla chips for serving; Grated cheddar cheese for serving