HiHo Cheeseburger, the first and only burger restaurant that exclusively serves 100% grass-fed Wagyu beef, is now open at the new Boardwalk Shops. HiHo’s signature burger—which won “Best Burger” in Los Angeles Magazine’s 2020 “Best of L.A.” issue—features two mustard grilled patties, American cheese, lettuce, onion jam and house-made pickles.