Definitive time to start diacetyl rest?

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JONNYROTTEN

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I'm getting into lagering...and liking it.

There seems to many different opinions on when to start a diacetyl rest.

So far I've seen:

When you hit 50 %

80%

2 to 4 points from FG

"almost finished"

"just start at 5 days and youll be fine"

Is this just sort of a best guess or opinion or "this is the I do it" kind of thing??
 

tgolanos

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I usually do a D-rest at 75-80%, which normally takes 7-10 days to reach. No specific reason why 75-80%, I guess. I feel my lagers' flavor profiles has been set by so warming it up a bit won't cause any off-flavors. I usually let my sit for another 7 days at the D-rest temp before cold-crashing and transferring.
 

Steveruch

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The first thing you need to determine is if there is actually any diacetyl. I've never needed to do a d-rest.
 

chumney

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I generally do a diacetyl rest when my beer has reach about 75% of the terminal gravity from the original gravity. Many brewers do not feel they need to do one but being sensitive to diacetyl, I do one as a preventive step. Good luck with what ever you decide.
 

Paulaner

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The first thing you need to determine is if there is actually any diacetyl. I've never needed to do a d-rest.
As stated above taste it to see if this rest is even needed or you may be wasting your time. Personally, I focus on brewing lagers and have only had one that needed a diacetyl rest.
 
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