Style: Spontaneously fermented Ale
Birrificio del Ducato, Soragna, Italy
Wild Fermented Italian Ale with Organic Malvasia grape and the wort of Chrysopolis (Del Ducato's Italian Lambic).
Ingredients:
Beer wort (Chrysopolis), Malvasia organic white grapes
The grapes are squeezed and transferred into a steel vessel (open top), no yeasts are added. The next day fermentation of grapes starts and we brew Chryspolis wort which is added to the fermenting grape must.
Fermentation lasts for 30 days without temperature control on grape skins, three times we recirculate the liquid from the bottom to the top where the grape skins are floating.
After 30 days we transfer the liquid to an isobaric tank and keep the beer at colder temperatures until all the sugars are fermented (apparent Final Gravity is -0.8 Plato!).
After 6 months the beer is bottled naturally carbonated and bottle conditioned with a small amount of priming sugar.
ABV around 7.0%
EBC around 2-3 with green-grey hues
IBU no idea but quite low, around 10-15
The resulting beer is very complex and elegant, almost an hybrid between beer and wine. It has tartness from malic acid of the grapes and some of the typical floral notes of Malvasia grape variety.