McDonalds New Wagyu Beef Burger 🍔. Brand New Gourmet Bun With 100% Australian Wagyu Beef Patty, Crispy Bacon Strips, Caramelized Onions, Tomato, Lettuce, Coon Cheese And Tangy Signature Sauce 🤤. Burger 7.5/10. Signature Sauce - 8/10. Frozen Fanta Pineapple - 8/10.