Recipes: Grilled bison burgers

Preparation:    Preparation time: 20 mins Cooking time: 12 mins Serving: 4 Ingredients: 1 lb. ground bison1 egg ½ cup panko breadcrumbs 2 tbsp Worcestershire sauce   Bison Burger Sauce ½ cup mayonnaise 3 tbsp ketchup 2 tbsp sweet pickle relish1 ½ tsp sugar 1 ½ tsp distilled white vinegar   Toppings 4...