Gelatin Gelatin Finings are used to ‘clear’ beer before kegging or bottling. Gelatin is the most powerful organic fining agent available in brewing. Tasteless, odorless and colorless water-soluble protein added to maturing beer. When mixed with water, gelatin creates a thin, positively charged solution. When added to the beer, it attracts negatively charged particles – yeast and protein – which clump together. Their collective mass helps them settle to the bottom of the fermenter or keg.