In 1991, the brewery decided to revive an old custom harking back to the 14th century when there were no means of refrigeration. Beer was then traditionally brewed in early December and stored over the winter under naturally cool conditions. The first barrels were only opened in March, as the days started to become warmer. It has a fresh, springlike bouquet with dominant tones of malt and grains. It is made using a top fermentation yeast, malted barley and newly harvested Alsation hops. With 5.4% alcohol by volume, it is a pure malt beer that is highly refreshing. It has a fine white head and clear golden colour, a dominant hoppy taste with a hint of fruitiness. Best served between 5 and 6°C.