Beef heart risotto

Ingredients

• 2 tablespoons olive oil
• 1 large red onion, chopped
• 1 cup red beans, cooked
• 4 cloves garlic, minced
• 2 cups minced beef heart
• 1/2 teaspoon ground cumin seed
• 1 tablespoon chili powder
• 2 cups arborio rice
• 1 quart good quality stock, home made preferred
• 1/2 teaspoon salt, to taste
• 1/4 teaspoon fresh ground pepper
• Sour cream or yogurt