Youngs Harvest Pilsner Lager Beer Kit. Harvest Pilsner Lager Beer Kit. Harvest Pilsner Lager Ingredients Harvest Pilsner Lager Kit Brewing Instructions. Contains 1.8kg Malt extract. Barley and Malt Extract (Barley, Malted Barley, Water) Hop Extract, Dried Yeast (in sachet).