Please use only organic beets. It isnt a matter of organic or not...if they are not organic, you are ingesting gmo beets. Almost all store bought beets are gmo now. Just as all sugar not marked as pure cane sugar is gmo beet sugar.

I am currently doing a mini-study of the benefits and effects of KVASS. Here is an article that explains it. https://en.wikipedia.org/wiki/Kvass

Here's another with a beet KVASS recipe: http://wellnessmama.com/9087/beet-kvass-recipe/

What prompted me to do it was that I had run out of my daily probiotic supplement so I decided to make my own. Mine is being made with oranges, apples, strawberries, blueberries and Himalayan pink salt.

The jury will be out for a time.