Servings 6-8Ready In: 4-6 HoursPrep Time: 30 Minutes 2 bottles Guinness beer (or other dark beer) 2 tablespoons dark brown sugar 3 1/2-pound uncooked brisket for corned beef, rinsed well and patted dry 1 tablespoon pickling spice 1/2 onion 1 head garlic, halved For...