In a nutshell: A classic, complex and rich fruit crème made with blackcurrants.
The lowdown: Boudier are based in Dijon the spiritual home of Crème de Cassis and theirs is one of the best around. Ripe blackcurrant are macerated, without preservatives or colouring, before the addition of a small amount of sugar. Kir Royale made with Crémant de Bourgogone always springs to mind as the perfect way to mix this.
Based in Dijon the company can trace its roots back to 1874. Since 1936 it's been owned by the Battault family, the fourth generation of whom are now running the business and it's now one of the few independent producers of its kind left.
While Crème de Cassis de Dijon is the liqueur at the foundation of things they've since expanded the range to encompass crème liqueurs made from many other fruits to eaux de vie, gin and other spirits. With their drinks being key ingredients to so many cocktails there won't be many bars across the world they're not seen in.