Just Spicy Enough Black Bean and Yam Chili

Name: Just Spicy Enough Black Bean and Yam Chili
Ingredients: 5 cups dry black beans, soaked and then cooked until tender; 1 large red onion, chopped; 1 large yam (approximately 3.5 c) cut into half-inch cubes; 1 large red bell pepper, chopped; 2 large jalapenos, minced; 3 cloves of garlic, minced; 6 cups vegetable stock; 30 ounces fire roasted diced tomatoes; 8 ounces dark ale (a coffee porter or stout would do nicely); 2 teaspoons cumin; 2 teaspoons cayenne pepper; 1 tablespoon chipotle powder; 1 tablespoon ancho chili powder; salt to taste