This is especially crucial when it comes to the filling, which is arguably the main draw of any taco. With beef tacos ...

They are filled with onions, garlic, ground beef, taco seasoning, and diced tomatoes ... Depending on the fat content of your ...

Roll into a ball, wrap in cling film and chill for 30 minutes. To make the beef taco filling, heat the oil in a large frying pan and cook the onion and peppers for 5 minutes, or until softened.