kvass is super low % alcohol fren. if you want something, try this: 2l walmart apple juice 300-400g sugar 1 walmart frozen juice box - starwberry is good ec118 heat the juice in a pan, melt the juice box, and get the whole thing warmish. 20-25c is good. sprinkle yeast in. cover. wait. keep it around the same temp and in 7-10 days youve got about 10-12% tasty juice which will do the the job.
Canada