What is Sahti Malt and where can I buy it?

Sahti Malt is a special malt blend for producing traditional Finnish beer, Sahti, highly appreciated, for example, by Michael Jackson, an English writer and journalist who has written several books about beer and whiskey. Sahti is traditionally brewed in farms and country houses. Today, there are also some commercial Sahti breweries in Finland. Sahti Malt is sold in 25 kg bags in many Finnish markets and supermarkets.