LA CASA BREWER'S YEAST: La CASA BREWER'S Yeast for homemade wine & red wine. STORAGE: We recommend storing unopened packages in a dry ambient conditions. Our La Casa BREWER'S Yeast packages have a shelf life of two years and have been Jar packed in order to remain stable and maximize yeast activity. IDEAL FOR: Fermenting fruit cider grapes (Bangalore blue green grapes red grapes) to achieve quality wine in India. QUALITY: La Casa products are made under the highest of quality standards.