KASEVIIN

I like that no water has been used to make birch vodka - otherwise I'd soon be hung out to dry... In the 19th century, Russian chemist Dmitri Mendeleyev was instructed by the tsar to determine the optimum strength at which to imbibe vodka. His studies showed that a litre of vodka should weigh 953 grams and be exactly 40% proof at room temperature. To this day, Mendeleyevs formula remains the basis for the production of vodka the world over.