Simple trays to rest large ball jars on when fermenting beat kvass.

The trays will hopefully help catch any of the staining liquid should the fermentation process cause them to bubble over.

We find that our beats can be fermented twice before they are ineffective, hence the 1st and 2nd opposite orientations so we can remember which jars have already fermented.

The stackable version is a little thicker than the thin version and allows stacking the trays when not all are in use.