Our latest creation using the historic Burton Union system is a special collaboration with our friends from the Brewery of Saint Mars of the Desert. 5.5% Old Ale from the Union. Our latest creation using the historic Burton Union system is a special collaboration with our friends from the Brewery of Saint Mars of the Desert. This beer is brewed with Maris Otter, dark malts and a particular blend of brewing sugars, balanced with a gentle addition of floral British hops. Garnet in colour, this quintessential old ale is full bodied and rich, with inviting aromas of fruitcake and dark cinder toffee.