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Old 11-29-2012, 05:10 PM   #1
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Default Question about Safale S-04 temperature range

I used Safale S-04 for the hard cider I'm brewing.

I noticed Fermentis says the ideal temperature range for fermentation is 59F - 75F.

When I initially pitched the yeast, the temperature of the wort was about 63F. A week later, it's a bit colder outside and since my primary is in the garage, the stick on temp gauge reads about 54-56F. There is still activity in the airlock, so I'm assuming fermentation is still going on.

I'm just wondering how low S-04 can ferment at. Will fermenting below the suggest temperature range produce any undesirable flavors?

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Old 11-29-2012, 07:32 PM   #2
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Unfortunately I have made the same mistake with S-04 and it can produce significant acetaldehyde flavors when fermented that cold. I would recommend trying to increase the temperature and leaving it on the primary yeast for longer to allow it to convert the acetaldehyde that may have been produced. You could take a taste sample too after primary to see if there has been any production of off flavors. You might pick up one of those personal fan heaters from Wal-Mart just put it on low until the temp stabilizes in the yeasts range. Sorry to be the bearer of bad news but in my experience S-04 doesn't like getting cold.

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Old 11-30-2012, 02:47 PM   #3
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I would try raising the temperature into the low 60s until fermentation ends, then ramp it up to 70 to make sure the yeast clear out any fermentation by-products.

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Old 11-30-2012, 03:03 PM   #4
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I always ferment S-04 at 59F for a week, then move it to room temp for another 1-2 weeks, and end up with a pretty consistently clean fermentation.

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Old 04-06-2013, 08:46 PM   #5
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Quote:
Originally Posted by TopherM View Post
I always ferment S-04 at 59F for a week, then move it to room temp for another 1-2 weeks, and end up with a pretty consistently clean fermentation.
What temp range for the last two weeks ?
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Old 04-06-2013, 10:42 PM   #6
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Quote:
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What temp range for the last two weeks ?

If you run it in the low 60's for the first week, stepping it slowly up to 67-68* for 7-10 days will be fine.
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Old 04-07-2013, 07:22 AM   #7
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I ferment with it at 12-13c for the first 4 days or so, let it rise for about 24 hours and then cool it again.

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Old 04-07-2013, 05:36 PM   #8
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Quote:
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If you run it in the low 60's for the first week, stepping it slowly up to 67-68* for 7-10 days will be fine.
Do you then need to cool it off just before bottling ?
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Old 04-07-2013, 06:44 PM   #9
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Quote:
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Do you then need to cool it off just before bottling ?

You don't have to. It's going to bottle condition at 70-72*F anyway.

I do cold crash to 38* for a few days before kegging/bottling to clear the beer, but I'm set up to do that rather easily (fermenter chamber with STC-1000 controller) just by pushing a couple of buttons.
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Old 04-08-2013, 01:34 AM   #10
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It falls very clear in minimal time. The degree of flocculation is mad, but it also takes a little while longer than others to carbonate up. Only 3 days for Notty and about 10 days for 04

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