Makers claim the distillation process dates to a time prior to Russia’s alcohol rectification, and describe the product as having a “bread-like taste and aroma”.

Ruslan Bragin, sales and marketing manager of Russian Distiller, said: “To achieve its distinct flavour it is processed in alembics - originally constructed copper port stills - and purified in egg white and birch charcoal.

The 61% distillate was limited to 1000 bottles for its initial release to the Russian market, retailing for £92 (US$145 €110).

Russian Distiller is planning to roll out Krivach across global markets, focusing on both the on and off-trade.