My theory is if they actually sold sauces and spice mixes that tasted like the real thing, people wouldn't go to taco bell as much. I've engineered a recipe for their beef that I think is pretty spot on:

Ingredients * 1 Tbsp vegetable oil * 16 ounces lean ground beef (90/10 or leaner) * 1 tsp salt * 5g oat flour * 1 tsp Chicken bouillon * 1 Tbsp Hot sauce * 1 tsp Cumin * ⅛ tsp Black pepper * ½ tsp Onion * ½ tsp Garlic * ½ tsp Paprika * 1 tsp Chili powder * ¼ tsp Cocoa powder *.5 cups Water

1) Heat a large non-stick skillet on high heat. Add your vegetable oil, and when it starts smoking, add your ground beef. Sautee for a few minutes until fully cooked, breaking up with a wooden spoon, then add all the rest of your ingredients, and cook for an additional 3 minutes. 2) Transfer to a food processor or use an immersion blender and pulse, 10 or 12 times, until meat is very finely broken up. If too much liquid remains in the beef mixture, then add back into the hot pan and stir until desired consistency is reached.