Our kettle/boiler design is not great. Boiloff rate is typically 5% per hour *at best*. Consequently, I've had some issues with DMS in my beers.
I've mitigated the problem by doing 2 hour boils but still was getting some DMS nose. It seemed to vary in intensity.
Lately, I've been playing with first-wort-hopping in an effort to get the most IBU out of my precious, precious hops. This seems to have had the side-effect of eliminating my DMS woes. I've now begun to add nearly all my bittering hops as a first wort addition and my beers have never been better!
This despite the FWH also reducing my boiloff rate to 2.5%/hr. The boil is a lot different, too. Much smaller bubbles, dramatic reduction in anti-foam use.
Mostly, I'm just thrilled to have gotten my DMS problem in hand, but I'm wanting to know why this works. Do the smaller bubbles in the boil blow off DMS better? Or...?
I've mitigated the problem by doing 2 hour boils but still was getting some DMS nose. It seemed to vary in intensity.
Lately, I've been playing with first-wort-hopping in an effort to get the most IBU out of my precious, precious hops. This seems to have had the side-effect of eliminating my DMS woes. I've now begun to add nearly all my bittering hops as a first wort addition and my beers have never been better!
This despite the FWH also reducing my boiloff rate to 2.5%/hr. The boil is a lot different, too. Much smaller bubbles, dramatic reduction in anti-foam use.
Mostly, I'm just thrilled to have gotten my DMS problem in hand, but I'm wanting to know why this works. Do the smaller bubbles in the boil blow off DMS better? Or...?
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