- 3 pounds yellow onions, cut into several large pieces
- 3 medium-size green bell peppers, seeded and cut into several large pieces
- 1 bunch celery, ends trimmed and cut into large lengths
- Leaves from 1 bunch fresh parsley
- 1 bunch green onion tops
- 1 head garlic, separated into cloves and peeled
- 2 quarts vegetable oil
- Three 8-ounce cans tomato sauce
- Three 20-ounce bottles ketchup
- One 10-ounce bottle Worcestershire sauce
- 3 tablespoons yellow mustard
- 3 tablespoons sugar
- 3 tablespoons salt
- 1 cup (2 sticks) butter
- One 2-ounce bottle Tabasco brand pepper sauce
- Place the yellow onions, bell peppers, celery, parsley, green onion tops, and garlic in a meat grinder or food processor and finely grind.
- Combine the ground vegetables with the oil, tomato sauce, ketchup, Worcestershire, mustard, sugar, salt, butter, and Tabasco in a large, heavy pot and stir to mix. Cook, stirring often, over low heat for about 1½ hours.
- Remove from the heat and let cool. Skim the oil that rises to the surface and reserve, Store the sauce and the oil in airtight containers for up to 2 days in the refrigerator or in the freezer for up to 3 months. Reheat it before you use it.