Bold Bourbon, rich honey and lemon with a dash of aromatic bitters ? this cocktail has spice, depth and complexity. As early as the mid 18th Century, the Bourbon Sour made its debut with sailors trying to stay hydrated and avoid scurvy. 100 years later, the Sour got popular as punch-for-one with the addition of a dash of sugar. Ever since, we?ve been enjoying variations on this theme.