Add diced onion, chilies, oregano, salt, chili powder, and a dash of black pepper.
3 Using a plastic spatula, “chop” the meat so that the pieces of meat are about 1/8 - inch diameter. Cook until hamburger is “done.”
4 Cover and simmer over low heat until slightly thickened.
5 Prepare taco shells or tortillas according to package and serve with meat inside.