Suntory Yamazaki 12 Years Old Single Malt Whisky Japanese Whisky 700ml 43%What is ISC? The International Spirits Challenge is a competition held in London that attracts worldwide attention. Organized by the British publisher Drinks International, the competition is divided into whiskey, brandy, rum, white spirits, and liqueur categories. Approximately 500 items were entered in the whiskey category. The judges include master blenders, chief blenders, and master distillers from whiskey distilleries around the world. After