"Tastee" Sandwich
Prep Time: 20 min
Cook Time: 40 min
Ingredients
- ✓ 4 ounces ketchup, or more to taste
- ✓ 5 teaspoons salt
- ✓ 1 tablespoon prepared mustard
- ✓ 1 tablespoon creamed horseradish
- ✓ 1 tablespoon Worcestershire sauce
- ✓ ¼ teaspoon ground black pepper
- ✓ 5 pounds 85% lean ground beef
- ✓ 1 cup warm water
- ✓ 1 cup minced onion
- ✓ 1 teaspoon monosodium glutamate (such as Ac'cent®)