Tetrahop Gold® is an aqueous alkaline solution of the potassium salts of tetrahydro-iso-alpha acids. It is produced from CO2 hop extract using a patented all-aqueous process. Tetrahop Gold® enhances beer foam when used as a post-fermentation replacement for a part of the normal bittering.
In the absence of normal alpha acids and iso-alpha acids, Tetrahop Gold® will give complete protection from the formation of light-struck flavour. Furthermore, it will act as an antimicrobial agent when added to beer.