Preheat A Grill For Medium Heat. In A Large Bowl, Combine The Ground Beef, Raisins, Onion, Garlic, Salt, Pepper And Worcestershire Sauce. Mix Lightly Using Your Hands, Then Divide Into 6 Portions. Flatten Each Portion Into A Patty. Place Burgers On The Grill And Cook For About 7 Minutes Per Side, Or Until Well Done. If You Do Not Wish To Grill, Fry Patties In A Skillet Over Medium Heat. Serve On Buns With Your Favorite Toppings.