Hombo Shuzo Mars Komagatake distillery (formerly known as Mars Shinshu Distillery) and Christian Drouin, a company that produces top-quality Calvados in the Normandy region of France, have started an experiment to exchange whisky barrels and Calvados barrels and age genshu in each location. At Mars Komagatake distillery, malt spirit aged in bourbon barrels for over 3 years is further aged (finished) for about 2 years in empty barrels previously used for Calvados, and a special single malt whisky limited to 587 bottles is bottled for your enjoyment.