Johnny Fincioen of the Global Beer Network explains about this odd style.
This beer, brewed by Brouwerij Van Steenberge takes the mother brew and beautifully blends it with fresh sweet beer. The nose has a vinegar bite leading the drinker to believe that the beer will be VERY sour. However the beer hits the pallet sweet, which causes a true explosion of flavour Some will tell you the brew is sweet while others will tell you its sour. This beverage is the perfect match with sweet and sour dishes (Asian Food), Mexican Food, Desert or even as a salad dressing.
Refermented in the Bottle & Keg: living beer. Belgian Old Brown Ale 5.5% Alc. by Vol.