Diacetyl Rest ?

farmer brown · Dec 5, 2012

Hey All

I'm brewing up a mild and using London ESB 1968. I read that I may have to do a diacetyl rest with this particular yeast in order to get rid of any buttery/butterscotch flavor? As its a mild I want a nice sweet/caramel finish so do I just ignore the diacetyl rest?

Also, I aimed to mash at 69c to get some nice unfermentable sugars but only manged 67c, is there anything else I can do so get a more sweeter finish? This particular yeast has a relatively low Attenuation of 67-71% so maybe ill get a slightly sweet finish anyway?

Any advice much appreciated : cheers:

zgoda · Dec 5, 2012

If the fermentation is warm enough at the end, there's no need for any special steps. By "warm enough" I mean 19-20c. Just don't rack to cold crash too early. Yeast will do its work.

farmer brown · Dec 6, 2012

Thanks zgoda
Its now fermenting at 20c.. Ill just let it do its things and cold crash when all is calm

WelshPaul · Dec 6, 2012

Sorry for the rookie question here, but would mashing at a slightly higher temperature usually result in a sweeter beer? Also, if these sugars are unfermentable, would it result in a slightly higher FG?

zgoda · Dec 6, 2012

WelshPaul said:
Sorry for the rookie question here, but would mashing at a slightly higher temperature usually result in a sweeter beer? Also, if these sugars are unfermentable, would it result in a slightly higher FG?

Yes and yes. :)

farmer brown · Dec 6, 2012

WelshPaul said:
Sorry for the rookie question here, but would mashing at a slightly higher temperature usually result in a sweeter beer? Also, if these sugars are unfermentable, would it result in a slightly higher FG?

I was meant to mash higher but realised after an hour it hadn't hit my 68-69 target so I dont think its going to have that nice slightly sweet/caramel finish. I did use Caramalt and crystal which should help anyway I guess?!

mak · Dec 6, 2012

So I'm guessing a longer mash where your temperature slowly drops from 69 to 66 will give the best of both worlds?

Diacetyl Rest ?

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