10ML CO2 Hop extract - HopShot
CO2 hop extract is a product developed from the extraction of the hop components that are essential for brewing with hops. Alpha acids & essential oils contribute to consistent brewing, bittering, aroma & stability.
CO2-extracted hop resin can be used for bittering or late additions to boiling wort; treat it just like leaf or pellet hops added during the boil. The syringe contains 10 milliliters of extract. One milliliter yields approximately 10 IBUs in 5 gallons of 1.050 wort when boiled for 60 minutes. Test batches indicate that this bitterness may be slightly less aggressive on the palate than your average hop addition.
Subject to availability and slightly longer delivery times
Great article on usage: http://humebrew.com/using-co2-hop-extract-in-homebrewing/