Ask Mr. Wizard

Stopping Fermentation

TroubleShooting

John Zybko - Crystal Lake, Illinois asks,
Q

Is it possible to stop fermentation to a target final gravity by chilling it to near freezing, kegging it, and never letting the temperature rise? For instance, if brewing a style that is not supposed to finish dry at near 1.000.

A
Halting a fermentation is certainly possible and some brewers do indeed use this technique to produce beer with residual sweetness. I don’t think you are looking for residual sweetness, but the topic
Response by Ashton Lewis.