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Old 07-08-2006, 12:34 PM   #1
Apr 2006
central PA
Posts: 36

All else being equal (assume two identical recipes, identical ingredients, identical fermentation temps, etc. etc. etc.), what kind of fermentation is better, one that proceeds slowly or one that "burns out" rapidly? Which would produce more ABV, which more residual sugar?
Secondary: sweet dessert mead
Conditioning: black raspberry port #1, black raspberry port #2; annual apple wines (2); Concord wine
Bottled and being imbibed: Santa's Magic Potion (seasonal holiday ale); gamay beaujolais #1, standard port, blueberry dessert wine, ice wine
Bottled and Aging: dry mead, sack mead
On deck: gamay beaujolais #2, cherry wine, peach wine; Trappist Dubbel; English strong ale

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Old 07-08-2006, 01:01 PM   #2
david_42's Avatar
Oct 2005
Oak Grove, Oregon, USA
Posts: 25,599
Liked 158 Times on 148 Posts

I haven't done wines in years. My experience, in general, has been that a slow ferment means higher residual sugar. Fast ferments tend to rip though everything and end up dry. With equal starts, residual sugar means lower ABV.
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Old 07-11-2006, 09:14 AM   #3
Jul 2006
Reading UK
Posts: 18

With Wine you really want to ferment as slow as possible. This will make for a much better quality wine at the end. It is true that you will end up with more residual sugar but I can normally get my wine down to 990SG which is very dry so there cant be that much left. I normally ferment for 3-4 weeks.

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Old 08-09-2006, 09:31 PM   #4
God Emporer BillyBrew
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Sep 2005
Posts: 1,509
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So is there any way to affect this. Keep it cooler? My first wine is making my airlock look like the water in it is boiling. It's going crazy!
Desert Planet Brewing Co.

Primary :Bloody Nose Porter
Primary 2: Bloody Nose Porter
Secondary: Blackberry Melomel
Secondary 2:air
Bottled : 14 Pound Hammer Cider, Punkin Ale, know ale, Domino wheat
Keg 1: **** Inside Her
Keg 2: IPA
Keg 3: one on a weeknight, two on a weekend IIPA
Future : Ginger Cream Ale,

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Old 08-10-2006, 06:23 PM   #5
Jul 2006
Posts: 5

Slow is always best and can be controlled by the temperature.
Generally speaking reds should ferment at a slightly higher temp than whites which need to develop the fruity esters required in white wines.
The worst possible place to ferment any wine is in a airing cupboard as the temperature fluctuates so dramatically.
No wine should take less than 4 weeks to ferment out properly, any faster and off flavours will develop during the maturation.
Hope this helps,

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