Yeast Cropping - Dry Hopping
Yeast Cropping When Dry Hopping
There are many approaches to dry hopping and yeast recovery. If dry hopping mid-ferment, we recommend cropping thin slurry from the fermentor prior to dry hopping. If dry hopping at the end of ferment, we recommend cropping some but not all of the yeast prior to dry hopping. What some breweries do is drop the temp a few degrees to get the yeast to flocculate, crop, then dry hop and let any residual fermentation (e.g. hop creep) warm the tank back up. This will depend on the thermodynamics of your particular tank.
For more information on yeast cropping or harvesting, see our YouTube video from the Yeast Basics Part 2 Series: