I have been reading (always a dangerous thing). The "alt yeast" the Germans developed was cold conditioned ale yeast. The yeast developed a resistance to cold, but was still top fermenting.
I am trying to emulate that by using ale and lager yeast.
I have brewed several alts. Just ferment with the ale yeast (what strain?) - when the fermentation is complete, cold condition (lager) the beer as long as you can stand it. I have gone a couple of months. Then bottle or keg and you are good to go. No need to add a lager yeast.
You really need to use Alt yeast. Wyeast 1007 German Ale is good. I know Whitelabs makes one, but I dont know it off the top of my head.
Ferment at 60*F until finished, then bring down to lagering temps for a month or two. Longer if you want clear beer, since Alt yeast is a low floccuating strain.
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I have been reading (always a dangerous thing). The "alt yeast" the Germans developed was cold conditioned ale yeast. The yeast developed a resistance to cold, but was still top fermenting.
I am trying to emulate that by using ale and lager yeast.
I don't think you'd accomplish much by adding lager yeast to an already fermented beer at secondary. Ale yeast are pretty thorough about using up all the food, oxygen and nutrients in a beer and contributing to the flavor. Ale yeast typically add more flavor to a beer than a lager yeast. So, really adding a lager yeast wouldn't add any notable qualities to the beer.
I am making an alt(hopefully this wknd) and I'll be using whitelabs 011 European ale yeast. Here's their info WLP011 European Ale Yeast
Malty, Northern European-origin ale yeast. Low ester production, giving a clean profile. Little to no sulfur production. Low attenuation helps to contribute to the malty character. Good for Alt, Kolsch, malty English ales, and fruit beers. Attenuation: 65-70% Flocculation: Medium Ideal Fermentation Temperature Range: 65-70°F Alcohol Tolerance: Medium
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