Jopen brews their annual Meesterstuk around St. Martin's Day, an ambitious special beer that changes character year to year. The 2019 edition is a Doppelsticke—a dark and rich beer at 10% ABV—distinguished by the addition of pine needles, which bring a distinctive aroma and flavour reminiscent of dense Scandinavian forests.

The beer combines spicy pine notes with the full, complex structure of a strong dark ale. Pine needle aroma dominates on the nose, while the palate unfolds with dark malt character and a warming alcoholic finish. This is a beer for those willing to embrace unconventional ingredients and bold brewing choices.