Lambburgers

Ingredients

• 2 lb lamb, ground
• 1 lb beef, ground
• 7 hamburger buns
• 2 medium tomatoes, sliced
• 3 tbsp minced garlic
• 1 tsp ground black pepper
• 1 1/2 tsp salt
• 1/4 cup Heinz 57 steak sauce or, your favorite
• 1/4 cup tzatziki sauce, optional
• 1 tbsp marjoram
• 1 stick butter, butter