Wyeast 1969 Diacetyl Rest

[DogFlynnHead]

Fermentation was winding down so I let the beer temp drop to 59 degrees. My question is, will the yeast still clean up after themselves (diacetyl rest) at that low a temp? Trying to stop fermentation by letting it get cold, but still need them to clean up.

 

[DogFlynnHead]

Fermentation was winding down so I let the beer temp drop to 59 degrees. My question is, will the yeast still clean up after themselves (diacetyl rest) at that low a temp? Trying to stop fermentation by letting it get cold, but still need them to clean up.

 

[KingBrianI]

Have you tasted the beer? Does it need a diacetyl rest? I just fermented a beer with 1969 and it was slowly but surely reducing the diacetyl at 64 degrees. I don't know about 59 though.

 

[COLObrewer]

Why are you trying to stop fermentation? What have you been fermenting at? Diacetyl rest should be at higher temp.

 

[DogFlynnHead]

Been using gravity balls, mainly because i have to auto siphon my samples (use a 6.5 glass carboy so the beer (wine) thief doesn't get down far enough to collect enough of a sample). I read about taking 2 samples, cooling 1 and heating the other to 140F and holding for 15 min. Then taste, if they taste the same there's no diacetyl.