Can't you have stuff ferment indoors? When I tried making my own Sauerkraut following a recipe, it told me to keep in the warm appartment for the first week (t

Can't you have stuff ferment indoors? When I tried making my own Sauerkraut following a recipe, it told me to keep in the warm appartment for the first week (to kickstart fermentation), and only put it in cold storage afterwards.