Kohatu hops are a variety of hops developed by the New Zealand Institute for Plant and Food Research hop breeding program and released in 2011. They are dual-purpose hops with both bittering and aroma qualities.
Kohatu hops have a lower alpha acid content (6-7%) and are a descendant of Hallertau Mittelfrüh, inheriting high humulene and myrcene oil contents from their German mother. This imparts a complex resinous and tropical fruit-driven punch to the hop, making it an excellent choice for single hop applications, especially in pale ales and session IPAs.
Kohatu hops also work well in more significant beer styles when used at higher addition rates to amplify their fruity aroma characteristics.
| Usage: | Aroma |
| Country of Origin: | New Zealand |
| Hop Growers Code: | KHT HORT3829 |
Where To Buy Kohatu Hops
Kohatu Flavor And Aroma
Kohatu is an aroma hop that is often described to have the following aroma characteristics:
tropical
berry
floral
Kohatu Hop Oil Breakdown
Hop oils can vary from year to year and farm to farm but based on our research, here are the typical values we have seen reported. This information comes from various hop farms, The Hop Aroma Compendium, and For The Love Of Hops.
| Alpha Acid % (AA) Alpha acids are what is isomerized when boiling to create bitterness in beer. | 6.80% |
| Beta Acid % Beta acids are what give hops their more aroma and flavor compounds. | 4% – 6% |
| Alpha-Beta Ratio This ratio of alpha acids to beta acids determines how quickly bitterness fades during aging. Lower ratios are common for aromatic varieties. | 1:1 – 2:1 |
| Co-Humulone as a % of Alpha Higher numbers are said to impart a harsher bitterness. | 21% |
| Total Oils (mL/100g) With more total oils, typically comes a more complex hop profile but these are highly volatile compounds. | 0.12mL – 1.0mL |
| Myrcene green, resinous | 35.5% |
| Humulene woody, piney | 36.5% |
| Caryophyllene woody | 11.5% |
| Farnesene floral | 0.3% |
| Other Oils: Includes beta-ionine, beta-pinene, limonene, linalool, geranoil & selinene | 13% – 18% |
| Hop Storage Index (HSI) The HSI indicates the percent of alpha and beta acids lost after 6 months of storage at room temperature (68°F or 20°C). | Data Not Available |
| Hop Storage Index (HSI) Rating | Data Not Available |
Kohatu Hop Substitutions
Replacing one hop for another is seldom straightforward but sometimes you don’t have the right hop or the right quantity of hops for the beer you want to make. For those situations, we have made a comprehensive list of hops to substitute on brew day.
These substitutions aren’t perfect as hop chemistry is pretty complex.
We wanted to make this list of substitutions with varietals that are easy to find when possible. For Kohatu, we recommend substituting with the following hops:
Beer Styles
For the most part, any hop could have a place in just about any beer style. Based on popular beers, historical usage, and our own preferences, we would recommend using Kohatu for IPA, New England IPA, Pale Ale, Wheat Beer, Golden Ale. That being said, experiment and see what works best for you.
References
https://www.hopslist.com/
https://www.ars.usda.gov/
https://www.brewersassociation.org/
https://www.barthhaasx.com/
https://www.yakimachief.com/
Hieronymus, Stan. For The Love of Hops. Brewers Publications, 2012
The Hop Aroma Compendium. 2012
