8.5% Red by Petrus (formerly Petrus Aged Red) is constructed from a base of Double Brown Ale. 15% Petrus Aged Pale is added to provide a dry character to the brew and give it a slight sour essence. Finally the brewer adds fresh cherries, which are evident in the inviting aroma. Red by Petrus is a perfect blend of sweet and sour with a cherry undertone which makes this brew tempting to drink from start to finish. -globalbeer.com