Set up in 1945 in the former Livonija brewery on Maskavas iela, Riga; the only maker of malt yeast in the Baltics. Part of the Aldaris production association from 1976. AS Rīgas alus darītava Vārpa was declared insolvent in 2004; from 2007 Alus avots brewed its Rīgas and Senču beers there. unverified info