Chevalo's Marinated Burgers from Charleston Gourmet Burger Company

As printed in Better Homes and Gardens, and passed on to us by Mary Ellen Sikora, mother of Mark Johnson, Director of Operations at Marczyk Fine Foods

Makes 8 patties

Ingredients
3/4 cup Worcestershire sauce
1/4 cup ketchup
2 teaspoons dried parsley 
1 1/2 teaspoons onion powder
1 1/2 teaspoons garlic powder
1/2 teaspoon salt
1 teaspoon ground black pepper
2 pounds lean ground beef
8 hamburger buns, split and toasted

Directions
In an extra-large bowl combine Worcestershire sauce, ketchup, dried parsley, onion powder, garlic powder, salt, and black pepper. Add ground beef. Using your hands, mix thoroughly until just combined. (Overworking the meat will make it tough.) Divide evenly into eight 1/2- to 3/4-inch-thick patties.

Arrange in a baking pan. Cover; chill 30 minutes to 24 hours to let meat marinate. Press center of each patty to form a dimple, which keeps the patties from bulging in the center. Grill on rack of a covered grill directly over medium heat 8-10 minutes or until medium doneness (160 degrees F), turning once. Serve on toasted buns.