The finished recipe. Steak Tacos on Corn TortillasIngredients 1 to 6. 150 g Rump steak, fat trimmed (Weighed raw. The same piece weighed after cooking has lost water, so the protein per gram is higher and the total would come out about a quarter over.). 3 small, about 90 g Corn tortilla. 60 g Tomato salsa. 50 g Avocado (Flesh only. Half a medium avocado is about 70 g.). 30 g Red onion (Sliced thin and soaked in the lime juice while the steak cooks.). 20 g Pickled jalapeñosIngredients 7 to 12. Juice of a lime Lime juice. A handful Fresh coriander. 1 tsp Ground cumin. 1 tsp Smoked paprika. 3 sprays Olive oil spray (Counted at a quarter of a gram per spray, which is what the nozzle on most bottles delivers. Four sprays is 9 kcal.). To taste SaltStep 1. Rub the steak with the cumin, paprika and salt. Sear in a sprayed, very hot pan for three minutes a side, then rest for five.Step 2. Warm the tortillas one at a time in the dry pan for thirty seconds a side and wrap them in a tea towel to keep soft.Step 3. Slice the steak thin across the grain. Divide it between the tortillas with the salsa, mashed avocado, drained onion, jalapeños and coriander.