Fermentation is the chemical transformation of organic substances into simpler compounds by the action of enzymes and complex organic catalysts that are produced by microorganisms.  Today we call this ProBiotics

Fermentation dates back many hundreds of years.  The benefits weren’t realized until the invention of the compound microscope in the 1500’s.  The mastery of creating beautiful stoneware began is Europe before the 1500’s.  The popular, more modern fermenting crocks still maintain the original design.  Germany, Poland and the Czech Republic are famous for producing handmade, kiln dried quality fermenting crocks.