Among the French provinces, French Flanders possesses the longest and richest history of beer making. The first breweries in the region date back to the time of Charlemagne. One of the most celebrated breweries in the area, Castelain is an artisan independent brewer best known for producing beers in the exquisite Bière de Garde style. Annick Castelain—the granddaughter of the brewery’s founder—has been pivotal in the movement to revive artisan brewing in France. Castelain is the leader in sustainable brewing, and has made major investments to reduce water and energy use at the brewery. Still fed by artisan well water, Castelain produces a collection of beers that ranges in style and flavor, with a focus on using local ingredients.