They are used particularly in the production of cask-conditioned beers known as real ale although there are a few cask ales available which are not fined using isinglass.

Isinglass finings. Isinglass is an extract from the swim bladders of sturgeon. Isinglass is a clearing agent made from the protein called collagen. Isinglass is a protein obtained from several varieties of fish.

Finings for the fermenter are added a few days before bottling or racking to precipitate yeast proteins and polyphenols. Isinglass finings are used extensively as a processing aid in the British brewing industry to accelerate the fining or clarification of beer. It is used particularly in the production of cask-conditioned beers although a few cask ales are available which are not fined using isinglass.

For boiled finings often called copper finings these should be added in the last 10-15 minutes of the boil as boiling them longer often reduces their effectiveness. Ordinary gelatin is an effective fining agent as it will remove proteins and polyphenols. The collagen-coated yeast drop out of solution.

Major Benefits efficient clarification at low addition rates unmatched brilliance. The Process Isinglass can be supplied in a number of forms. Brewcraft Isinglass Finings are used to improve the clarity of your brew.

Liquid isinglass finings Liquid isinglass is added to beer post fermentation to clarify it by removing yeast and protein particles. Fining with Isinglass Beer can be fined with isinglass to remove yeast cells. Isinglass will also remove unwanted compounds resulting in smoother flavour.

Isinglass finings are widely used as a processing aid in the British brewing industry to accelerate the fining or clarification of beer. Mangrove Jacks 1 Litre Isinglass bottle is sufficient for 250 Litres of beer or wine. Ready for use RFU and concentrated products are available.