• 1 pound lean ground beef.
• 1/2 teaspoon black pepper.
• 1/2 teaspoon garlic powder.
• 1/2 teaspoon Worcestershire sauce.
• 2 tablespoons grated onion.
• 1 tablespoon pickle relish.
• 2 teaspoons yellow mustard.
• 1 teaspoon white vinegar.
• 4 (6-inch) flour tortillas.
• 2 cups shredded lettuce.
• 1/2 cup shredded cheddar cheese.
• 1/4 cup chopped pickles.
• 1/4 cup diced tomatoes.