The finished recipe. Spiced Beef and Black Bean TacosIngredients 1 to 6. 130 g Beef mince, 5% fat (Weighed raw. Standard 20% mince is nearly twice the calories at the same weight.). 80 g Black beans, tinned and drained (Drained weight.). 2 small, about 60 g Corn tortilla. 20 g Reduced-fat cheddar. 40 g Greek yogurt, 0% fat. 40 g LettuceIngredients 7 to 12. 60 g Tomato. 1 tbsp (15 g) Tomato purée. 1 tsp Ground cumin. 1 tsp Chilli powder. A pinch Dried oregano. A squeeze Lime juiceStep 1. Fry the mince in a dry non-stick pan over a high heat until browned, breaking it up. Add the cumin, chilli powder and oregano and stir for a minute.Step 2. Add the tomato purée, beans and 100 ml of water. Simmer for eight minutes until the liquid has gone and the mince is coated.Step 3. Stir the lime juice into the yogurt. Warm the tortillas in a dry pan.Step 4. Fill the tortillas with the mince, shredded lettuce, chopped tomato, grated cheese and the lime yogurt.