A fermenting Crock - or Fermenting Jar, is a special type of crock that is used when doing fermenting. It makes it much easier and safe to ferment as you do not have to open the lid to let out the gasses. Also, a handmade and unique ceramic fermenting crock looks so much better than a standard glass. 

You can see a video with how I make the fermenting crocks sold here. 

If you're interested in making your own fermented foods at home, then you'll need a good fermenting crock. Ceramic fermenting crocks are some of the best options out there, as they're non-reactive and won't leach any chemicals into your food. Plus, they're easy to clean and care for.

When choosing a ceramic fermenting crock, make sure to get one that is food-safe and has a tight-fitting lid. You'll also want to pick one that is the right size for your needs. Smaller crocks are great for making small batches of fermented foods, while larger ones are better suited for larger batches.

Once you have your fermenting crock, you'll need to prepare it for use. This simply involves sterilizing the crock and lid with boiling water. Then, you're ready to start fermenting!

There are a few different ways to ferment foods, but the most common method is to use a saltwater brine.