Tacos

3 pounds of either beef or pork, shoulder cut or loin
1 large onion
2 cans either Mexican or Cajun stewed tomatoes
1 can of chopped green chilies
2 packages tortillas
1 package grated cheese
1 can olives
1/2 head of chopped lettuce
1 chopped tomato
1 chopped avocado

Brown meat and place in a crockpot. Combine the next 3 ingredients. Cook on low 6 to 9 hours. When meat is completely cooked, shred it with a fork. Serve other ingredients salad bar style. Make your own tacos.