Cylindrical pellets made from dried, milled and pressed leaf hops; most of the alpha acids in these pellets have been converted to iso-alpha acids
Iso-Pellets are a hop product added to the wort kettle during the boiling process. They offer a higher yield as a result of pre-isomerization of the alpha acids during the production process. Iso-merization is induced by adding a small amount of food-grade MgO during processing followed by warm storage of the packaged pellets.
Iso-Pellets can replace conventional bittering and aroma products without impacting beer quality. Substantial cost savings are possible with pre-isomerized hop products. In addition, isomerized pellets have a long shelf life.