Episode 162 | The Gas Hopper w/ Drs. Philip Wietstock & Brian Gibson
Jul 3, 2024
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Drs. Philip Wietstock & Brian Gibson discuss the Gas Hopper - a CO2-based method to infuse hop aroma into beer without dry hopping. They compare brewing techniques between Germany and the US, explore hop extract usage, and highlight the versatility of the Gas Hopper in modifying beer flavors. The podcast also covers the efficiency and sustainability of using CO2 in brewing, the optimization of aroma transfer with the Gas Hopper, and the potential applications beyond hops in beverages.
Gas hopper system uses CO2 for hop aroma transfer, avoiding traditional dry hopping issues.
Gas hopper system offers sustainability by enabling reuse of hops for bittering post-aroma transfer.
Gas hopper outperforms traditional dry hopping in aroma transfer efficiency, with potential for broader applications.
Deep dives
The Imperial Yeast's I-10 Mango Steenee Proprietary Strain
Imperial Yeast's latest Imperialis project introduces the I-10 Mango Steenee hybrid strain, renowned for its ripe tropical fruit, strawberry, and lychee notes, exceptional attenuation, and tolerance for fermentation temperatures ranging from 78 to 90 degrees Fahrenheit.
Innovation in Dry Hopping
The gas hopper, a new invention by Dr. Philip Wichstok and Dr. Brian Gibson, maximizes hop aroma transfer without the drawbacks of traditional dry hopping. By leveraging CO2's properties, hop aroma compounds are transferred to cold carbonated beer without any direct contact.
Advantages of Gas Hopping
The gas hopper system avoids common dry hopping challenges such as reduced yield, increased pH, diacetyl, and oxygen exposure. It offers a sustainable approach as hops can be reused for bittering purposes post-transfer of aroma compounds.
Comparing Gas Hopping to Traditional Dry Hopping
Comparative trials reveal that the gas hopper system can outperform traditional dry hopping in aroma transfer efficiency. Despite a short treatment time, the gas hopper yielded more hop aroma compounds compared to a week-long traditional dry hopping process.
Future Research and Applications
Future studies aim to explore the modulation of sensory profiles by adjusting system parameters such as salt addition and temperature. The versatility of the gas hopper extends beyond brewing, allowing for potential applications in other beverages and aromatic substances.
Drs. Philip Wietstock & Brian Gibson from Technische Universität Berlin join Cade in the lab to discuss an innovative way to get hoppy aroma into beer without the mess of dry hopping.
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