crock pot sloppy joes

Ingredients

• 3 pounds ground beef
• 2 tablespoons shortening
• 1 cup onion, finely chopped
• 1 cup celery, chopped
• 1 - green bell pepper, diced
• 1 - garlic clove, minced
• 2 tablespoons worcestershire sauce
• 1 cup ketchup
• 3 - beef bouillon, crushed cubes
• 1/2 teaspoon paprika
• 1/4 teaspoon pepper
• 6 ounces tomato paste
• 1.25 cups water
• 3 tablespoons vinegar
• 3 teaspoons brown sugar
• 1 teaspoon dry mustard