Jopen 06/12 is a sour ale from the Netherlands' largest independent craft brewery, based in Haarlem. This seasonal offering blends the city's historic brewing heritage with contemporary craft technique. At 4.3% ABV, it strikes an approachable balance between tartness and complexity.

The beer opens with bright acidity and subtle fruity undertones, finishing clean and refreshing without heaviness. It's designed for extended enjoyment rather than intensity. Jopen has been reviving Haarlem's six-century-old brewing tradition since 1994, rooted in the city's medieval beer culture.