Ok now the taco shell can be soft or hard. Whats in it is beef ( Or chicken ), lettuce, tomato chunks, sour cream, onions, guacamole, salsa, and sometimes beans. That's what's usually on mine, at least. Sometimes, not usually, people put on pineapple chunks. Pretty wierd! Oh yeah- cheese and hot sauce. P.s. Bubba gump hot sauce = so good!
It depends on personal taste. You asked for usually, so ground meat (usually beef), lettuce, and shredded cheese. It may also contain onions, diced tomatoes, salsa or taco sauce, sour cream, and other ingredients.
Other mini tacos are inside of the regular sized ones. You need a microscope to see them though. They are disguised as.. Any kind of meat, lettuce or green cabbage, and yellow cheese. If you don't believe me test it out. How else do they get tacos to taste like tacos..