Smirnoff vodka starts with the best grain neutral spirit, improving it with an industry-leading distillation and charcoal filtration process. Smirnoff distillation uses high column plate stills, a process that takes 24 hours. Eventually the neutral spirit becomes a strong, pure alcohol. This is blended with demineralised water to achieve a strength of 57 percent alcohol by volume. The Smirnoff filtration process is unparalleled.