Ketel (Dutch for Pot still) One is a liquor brand of the Nolet Distillery in Schiedam, the Netherlands. Ketel One Vodka is distilled from 100% wheat 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." The alcohol content of this spirit is 40% (80 proof (US), 70 degrees proof (international)). The Nolet Distillery also makes Ketel One Citroen, Ketel One Oranje, Ketel One Botanical (in the varietals Peach&Orange Blossom, Cucumber&Mint, and Grapefruit Rose) and Ketel 1 Jenever.
User "mblosser007" rated Ketel One Vodka as "average at best" on a review on the "Distiller" site on August 18, 2020:
"It’s funny, you think you’re drinking a quality premium vodka until you blind taste test it against some others. Used to be my go-to vodka. No longer! Ketel One is average at best. Oily with a hint of sweetness, but way too much ethanol and metallic flavor. Not quite good enough compared to others at that price point. Best used in mixed drinks."