Ketel One Vodka is distilled from 100% wheat and made at the Nolet Distillery in Schiedam, the Netherlands. It is distilled in copper pot stills, filtered over loose charcoal, and rests in tile lined tanks until ready. Ketel One Vodka is named after the original copper pot still, “Distilleerketel #1” and is handcrafted in small batches. The alcohol content of this spirit is 40% (80 proof). The Nolet Distillery also makes Ketel One Citroen and Ketel 1 Jenever.
http://en.wikipedia.org/wiki/Ketel_One
Never drank vodka. I suggest you buy a bottle Beerenburg next month.
http://en.wikipedia.org/wiki/Beerenburg