What to do with the liquid during winter when there are no gardens?

Diluted liquid can be used to promote house plants' growth, and the undiluted liquid is great to clean the drains and the toilet.

You can use the liquid to water indoor plants (the ratio of bokashi liquid to water should be 1:200) or simply pour it down the drain and let it sit overnight, which will help clean the plumbing system. You can also use the undiluted liquid to clean the toilet.