Guess why I’m reposting this?
Winter is here (in the Northern Hemisphere), and homebrewers living in colder climes may encounter situations in which cold weather affects their fermentations. When most homebrewers think of controlling fermentation temperature, they think of modified chest freezers or fridges to cool their brews. (Lacking that, the wet t-shirt method may be employed.) However, in cold-weather locations, fermentations may cool down to the point where they become sluggish or even stop. Here are some tips for keeping your fermentation temperatures up (and somewhat level) during cold weather.