For years, hop processors have been extracting the "goods" from hops with a variety of methods. Oils (containing the hop aroma) have been extracted with steam distillation and both oils and alpha acids have been extracted with nasty solvents such as hexane and methylene chloride. These create problems: The heat of steam distillation changes the hop aroma profile, so you can't use steam distilled hop oils for a true fresh hop aroma. And in order to remove the solvent, they have to heat it, again changing the aroma. There are also concerns that some solvent remains. Recently, CO2 has been used to extract oils and alpha acids, with none of these problems. All of HopTech's hop oils, essences and extracts are made with a CO2 extraction process, and HopTech is the only source for the homebrewer. All of our oils, extracts and essences come with complete instructions for use, and methods for conducting taste tests using small quantities of beer (like 12 ozs) before addition to the whole batch.

Hop Oils, Essences and Extracts - Subcategories

Hop Oils Late Hop Essences Iso-Alpha Acid Extract