Secrets of Kozatsky "Tobacco" or What the Cossacks Smoked

It seemed that the Cossacks could smoke, except for tobacco. But there are researchers who know that herbs can also be used to stuff the Cossacks' favorite toy.

One of the researchers of this phenomenon was Anatoly Pasternak, who wrote a book on this topic, "Cossack Medicine". So he says that tobacco was too expensive for everyday use in those days, so the Cossacks smoked herbs that have healing properties: they improved sleep, digestion, and softened the effect of the environment on the nervous system.
And what kind of herbs were these and what kind of Cossack secrets you will find out in this video.