In order to produce Old Kriek Cuvée René, the cherries ferment in a lambic that is at least six months old in huge 10,000-litre oak barrels called foudres. After six months, this traditional kriek is bottled in corked 75 cl bottles. The beer will then undergo a spontaneous second fermentation process which, after a few months, will produce the carbon dioxide (CO2) to which this authentic beer owes its carbonation and distinctive foam head. – Brouwerij Lindemans
