Hertog Jan double is a traditional dark beer of high fermentation. the term 'double' refers historically to the double amount of ingredients. Hertog Jan double tests you with all your senses, allowing you to make the most of color, smell and taste. First you pour it into a glass and admire the foam and the beautiful reddish-brown color. next you smell full soft flavor. you take a sip and taste the rich malty character. and finally you enjoy the slightly sweet aftertaste.The secondary fermentation in the bottle gives a fresher and richer flavor and aroma.