Micro Brewery Setup Mash And Kettle Hops
- Aug 20, 2021
- 123
- tiantai
For Micro Brewery Setup, Mash hops in brew house were a thing a decade and more ago, but they haven’t been the focus of beer brewing system for awhile.
Mash hops have a sensory impact, though it’s subtle.
More interestingly, they contribute IBUs. He found that a half pound per barrel of high alpha hops will contribute 20-30 IBUs, and pegged utilization at 8-10%.
Furthermore, there’s a leveling out of all additions over the course of the boil, so if you only use mash hops, they will contribute more IBUs than if you have many additions. They don’t just stack cumulatively. He isn’t sure of the mechanism but wonders if thermal degradation (the breakdown over the entire process of mash, boil, and whirlpool) plays a role.
Kettle Hopping
Justus offered two big findings from their research on kettle hops, one expected, one not. He was surprised to find that the vast majority of bitterness came in the first five minutes of the boil. This contradicts all the research I’ve seen, in which the bittering curve takes a lot longer to develop. (In the kettle, the bitterness comes from the conversion of alpha acids into iso-alpha acids.)
He didn’t speculate on the reason for the discrepancy (higher-alpha hops?), but it conforms to the observations many other American brewers made when they were trying to build juicy beers and kept finding their kettle additions were adding too much bitterness. It was true of additions made at different points in the boil as well. Thirty- and ten-minute additions “behaved very similarly to 60-minute additions.” In his research, he found that after five minutes, you’ll only pick up another 5-10% more utilization. (That’s not nuthin’, given that utilization won’t go much above 50%, but it’s striking nonetheless.)
However, other factors scramble the potential for utilization. “If you’re doing a Scottish ale where you’re hopping at .1 pounds per barrel, you’re going to get about 60% utilization, whereas if you’re doing an imperial red which is super-high gravity and the hop rate is outrageous, your utilization is going to drop below 20%.”
Additionally, the alpha content of the hop affects utilization. They compared the effect by kettle hopping a blond ale with .1 pounds per barrel of Polaris (super high bittering potential, ~21%) and the same beer with 1.2 pounds per barrel of Tettnanger (low bittering potential, ~4% alpha). He got 45% utilization from the Polaris and only 30% from the Tettnanger.
What is the small brewery startup costs? TIANTAI company is turnkey micro brewing equipment manufacturer. Breweries for sale UK, breweries for sale in Canada, breweries for sale Australia, breweries for sale America......brewhouse, fermenter unitank, BBT, hops gun, hops cannon, etc.
Derrick
Sales Manager
[email protected]
Tiantai Beer Equipment
Mash hops have a sensory impact, though it’s subtle.
More interestingly, they contribute IBUs. He found that a half pound per barrel of high alpha hops will contribute 20-30 IBUs, and pegged utilization at 8-10%.
Furthermore, there’s a leveling out of all additions over the course of the boil, so if you only use mash hops, they will contribute more IBUs than if you have many additions. They don’t just stack cumulatively. He isn’t sure of the mechanism but wonders if thermal degradation (the breakdown over the entire process of mash, boil, and whirlpool) plays a role.
Kettle Hopping
Justus offered two big findings from their research on kettle hops, one expected, one not. He was surprised to find that the vast majority of bitterness came in the first five minutes of the boil. This contradicts all the research I’ve seen, in which the bittering curve takes a lot longer to develop. (In the kettle, the bitterness comes from the conversion of alpha acids into iso-alpha acids.)
He didn’t speculate on the reason for the discrepancy (higher-alpha hops?), but it conforms to the observations many other American brewers made when they were trying to build juicy beers and kept finding their kettle additions were adding too much bitterness. It was true of additions made at different points in the boil as well. Thirty- and ten-minute additions “behaved very similarly to 60-minute additions.” In his research, he found that after five minutes, you’ll only pick up another 5-10% more utilization. (That’s not nuthin’, given that utilization won’t go much above 50%, but it’s striking nonetheless.)
However, other factors scramble the potential for utilization. “If you’re doing a Scottish ale where you’re hopping at .1 pounds per barrel, you’re going to get about 60% utilization, whereas if you’re doing an imperial red which is super-high gravity and the hop rate is outrageous, your utilization is going to drop below 20%.”
Additionally, the alpha content of the hop affects utilization. They compared the effect by kettle hopping a blond ale with .1 pounds per barrel of Polaris (super high bittering potential, ~21%) and the same beer with 1.2 pounds per barrel of Tettnanger (low bittering potential, ~4% alpha). He got 45% utilization from the Polaris and only 30% from the Tettnanger.
What is the small brewery startup costs? TIANTAI company is turnkey micro brewing equipment manufacturer. Breweries for sale UK, breweries for sale in Canada, breweries for sale Australia, breweries for sale America......brewhouse, fermenter unitank, BBT, hops gun, hops cannon, etc.
Derrick
Sales Manager
[email protected]
Tiantai Beer Equipment
