What is hop extract?
CO2 hop resin extract is a product developed from the extraction of the hop components that are important to brewers. These are the alpha-acids and essential oils that contribute to beer bitterness, aroma, head retention, and stability. This is different from using pellets or whole leaf hops, as hop resin extract eliminates a great deal of the inert materials that come with pellets and leaf hops, which means less trub in the bottom of the brew kettle.
John Kimmich, Co-owner and Brewer of The Alchemist Brewery famous for Heady Topper & Focal Banger is constantly working to improve his beers. One of the improvements was the use of only hop extract in the boil. John has apparently been heard to say "No hops in my kettle".
Hop extract is designed to be used during the boil. That's because the alpha acid extraction is the same for hop resin extract as it is for whole hops and pellets and the hop additions can still be staggered throughout the boiling process. Early kettle additions (60-90 minutes of extract/boil time) are used to achieve IBU's in beer and will typically lead to the isomerization of 35% utilization. Adding the hop extract later during the kettle boil will result in various specific flavor and aroma contributions.
Benefits of Bittering with Hop Extract:
• Reduced vegetal and polyphenol flavor contribution
• Decreased loss of wort from hop mass in the kettle
• Less foaming in the kettle than when hops are added
• Variety specific hop character and related notes in beer
• Increased alpha acid utilization
• Higher stability of alpha acids, beta acids and hop oils
• Extended shelf life of the hops compared to cone or pellets
How to Use:
Prepare the hop extract by combining the desired amount of extract from the syringe with about 250ml of wort in small pot or stainless mug. Stir until fully dissolved then add back to your kettle. Hop extract is not isomerized until it is boiled during the brewing process. Unused resin should be stored in a refrigerator or freezer.
|GRAVITY||10 IBU||20 IBU||30 IBU||40 IBU||50 IBU||60 IBU||70 IBU||80 IBU||90 IBU||100 IBU|
|1.030 - 1.070||1ml||2ml||3ml||4ml||5ml||6ml||7nl||8ml||9ml||10ml|
|1.080 - 1.100||1.1ml||2.2||3.3||4.4||5.5||6.6||7.7||8.8||9.9||11ml|
|1.110 - 1.150||1.2ml||2.4||3.6||4.8||6||7.2||8.4||9.6||11||12ml|
|1.110 - 1.150||1.3ml||2.6||3.9||5.2||6.5||7.8||9.1||10||12||13ml|
• +1.080 decreases hop utilization by ~10%
• +1.100 decreases hop utilization by ~20%
• +1.150 decreases hop utilization by ~30%
• 90 min boil increases IBU by 10% (decreases hop extract needed by 10%)
35 IBUs are needed for 60min boiling addition for 20 litres of beer at 1.045.
35 IBU/ 10 IBU/ml = 3.5ml needed of hop extract
80 IBUs are needed for 60 min boiling addition for 40 litres of beer at 1.085.
80 IBU/ 10 IBU/ ml = 8ml x 2 (for 40L) = 16ml + 10% = 17.6ml needed of hop extract
60 IBU are needed for a 90 min boiling addition for 20 litres of beer at 1.150.
60 IBU/ 10 IBU/ml = 6ml + 30% (+1.150) - 10% (90min boil) = 7.2ml need of hop extract
Varieties available include:
INCOGNITO® Full-spectrum hop extract specifically designed to be used in the whirlpool.
INCOGNITO® is a 100% all-natural, full-spectrum hop product crafted to deliver highly concentrated flavor while maximizing brewing efficiency and reducing process loss.
• No vegetative material
• Flowable at ambient temperature
• Available in Citra™, Mosaic™, Sabro™, Ekuanot™ in 10KG & 2 KG Jug
• A smaller format is coming soon for homebrewers!
• Usage is 1g-2g/L in the whirlpool