This is the basic taco recipe that I use at camp.
BEEF TACOS FOR 100
22 pounds lean ground beef
2-3/4 cups taco seasoning (see recipe)
200 taco shells
6 pounds cheddar cheese, grated
6 pounds lettuce, shredded
3-1/2 pounds onion, chopped
3-1/4 quarts salsa or taco sauce
Cook beef until it loses its pink color; stir to break apart. Drain fat. Add taco seasoning to beef. Saute 5 minutes. Arrange taco shells on sheet pans. Using a convection oven, bake 2 to 3 minutes at 325 degrees F on high fan, open vent until just heated. Place 1/4-cup meat filling in each taco; line up next to each other in steam table pan. Just before serving, top each taco with 2 tablespoons cheese, 2-1/3 tablespoons lettuce, 2 teaspoons onions, and 1 tablespoon salsa or taco sauce.