Perpetua wild aged Bruin with damsons. sourness is just spontaneous. no brett nor bacteria were added. Fermented in stainless steel, it is then added to the perpetua blend that is ageing into oak barrels. This procedure allow us to moltiplicate the barrel microflora through a sort of Solera method. The beer is then macerated for 2 months on fresh handly-pressed damsons (Ramasin cultivar from Piedmont).