Rochefort 6 (red cap, brown beer, 7.5% ABV). Reddish colour, brewed only about once per year, representing approximately 1% of total beer production. This beer begins with a density of 16.5º Plato is 7.5% ABV. “Rochefort 6” is the oldest Rochefort Trappist beer, and was brewed empirically until the end of the Second World War. It has a strong malt taste and is slightly bitter.