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Old 11-04-2009, 12:44 PM   #1
Bru
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Default California Lager and Bohemian at the same time ?

To get the most out of my fermentation chamber I want to do three batches at the same time - two with regular lager yeast (probably Bohemian and one other) and one with California lager yeast.
The California yeast recommends higher fermentation and lagering temps (62F - 68F) than the other two (50F) - if I ferment the California at 50F will I get any negative effects ?


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Old 11-04-2009, 04:47 PM   #2
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I did just this (well, tried is more like it) 6 weeks ago, I have 1 fridge with a temp control thermostat that holds up to 4 cornies (I only have 2 and a fermenting bucket). In my case the California lager yeast (CL) (wyeast) wouldn't start fermenting until I cranked the temp up to 60F, so I let the traditional lager (saflager-23) ferment for a week at 50F (since most off flavors are produced during the first 2-3 days) and then took the temp up to 60F and the California lager started fermenting, kept it there for 2 weeks and then racked both onto their secondary with some gelatin finings and took the temp up to the high 70's for 2 days and then down to 35F'ish for the last 3 weeks, and they're still there aging and only getting better.

I used:
Partial mash (not steeping) and partial boil (I only have a 2.5 gallon pot and stove-top to work with). Don't have a scale so I use ounces by volume and sometimes adjust by sight (I'm an amateur cook as well, so that helps).

5-5.5'ish gallons came out of it

3# amber DME
3.3# light LME
12 oz (volume) munich malt
16 oz (volume) crystal 10L
Northern brewer hops @ 60' and 20'

Dumped onto 2 bags worth of ice (1 bag for each fermenter) and adjusted to SG 1.052 with RO treated water (I only use RO treated water, the water down here is harder than steel)

OG 1.052
FG 1.010

5.5% ABV

Both are medium body, have great head retention, slightly sweet (CL less so than TL), copper (TL) and amber (CL), could have used a third hop addition though. The California lager has cleared up better for some reason. My California lager has a spiced aroma as if I'd used cloves in the recipe. The TL has a sulfury tinge (both smell and taste, had to purge some of it with CO2 from forced carbonation) but that is to be expected in a TL.

Anyhow, this is my experience with 2 types of lager from the same batch of wort.



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Old 11-05-2009, 02:17 AM   #3
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Sorry, double post, mods please delete, previous post wouldn't show when I replied second time

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Old 11-05-2009, 11:18 AM   #4
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Thanks.
Increased temp for diacetyl rest for the TL would probably get the CL going.
Can anyone else comment ?
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Old 11-05-2009, 02:41 PM   #5
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I've seen some pictures once where the guy divided his kegerator into two chambers with a Styrofoam wall in the middle and put an iguana ceramic bulb (pet store) in one of them to increase temp. This way he got 1/2 a kegerator with serving temps and 1/2 good for fermenting.
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Old 11-19-2009, 10:47 AM   #6
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Sorry for the late reply.
Thats interesting. I recently sheeted my freezer in a layer of styrofoam - a layer on the inside at the back - the rest outside. Its made a huge difference. Before it was battling to maintain temperatures with ambient temps around 30C.


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