Fermentation is one of the oldest, easiest, and healthiest ways to preserve and ferment food. These beautiful Ohio Stoneware crock set lets you get started with fermenting. Natural, lactic acts fermentation allows vegetables to retain more vitamins and minerals the most other methods. Simply fill the crock with the food you want to ferment, insert the weights to add your brine, and add the lid to help keep surface yeast from forming. 2 gallon crock.