Beer of spontaneous fermentation, the Old Sureau Tilquin is made from the fermentation of 125 g of elderberries by liter of lambic. Unfiltered unpasteurized, this beer is refermented in the bottle
This beer was obtained by fermenting 240 gr of fresh rhubarb per litre of lambic. The rhubarb has been produced locally by the Ferme de la Bosse Jauque.