On New Year’s Eve, the song “Auld Lang Syne” urges us to “take a cup of kindness.” It’s an old Scottish saying, meaning to share a friendly tipple—presumably of single malt whiskey.
Nowadays there are whisky (Scottish, with no e), whiskey (Irish and North American), rye whiskey (North American) and bourbon (American), but no matter what the drink is called, the method for making it is essentially the same. Like beer, its ancient precursor, whiskey is made with water, grains and yeast. It’s the distillation process that leads…