Balliihoo Youngs Beer Finings, Suitable For All Beers, Lagers, Ciders Etc Add To Your Brew To Aid With Clearing - Works In 24/48 Hours. This Handy 30 Gram Sachet Is Added Direct & Is Sufficient To Treat 23 Litres (5 Gallons).  Tonys TipsYoungs Beer Finings contain the clearing agent Chitosan produced commercially by deacetylation of Chitin, the structural element in the Exoskeleton of Crustaceans such as shrimps or crabs - (the seaside variety I trust!) which has a long history for use in winemaking and is approved for European use by EU and OIV standards, it certainly clears Beer effectively too and brings forward the all important RTDT (Ready To Drink Time) I always keep at least 5 x 35g sachets in reserve, each will treat 5 gallons (23 litres) . . . . Clear The Home Brew Shop Youngs Beer Finings Sachet Youngs Beer Finings Add to beer after fermentation, then stir gently and leave to stand for 2 days before bottling or barrelling