Sarah Kersten Studio Fermentation Jar

The rim of the jar is designed with a channel that you fill with water. When you place the lid into this channel, it creates an airtight barrier that allows fermentation gases to escape while preventing oxygen from entering, which is crucial for preventing mold and spoilage.

Ceramic is opaque, which protects your ferments from light exposure that can degrade nutrients and affect flavor. Additionally, the weight and thermal mass of stoneware help maintain a more stable temperature during the fermentation process.

Yes, the weights are specifically sized to fit the jar and provide the necessary pressure to keep your vegetables below the brine line. This is essential for successful fermentation, as any produce exposed to air is prone to spoilage.

Because each piece is handcrafted, you should expect slight variations in color, glaze, and finish. These unique characteristics are part of the artisanal process and do not affect the functionality or safety of the vessel.

Yes, the ceramic material is dishwasher safe. However, we recommend hand washing to preserve the finish over the long term, though the material itself is durable enough to withstand machine cleaning.

While it is purpose-built for fermentation, its food-safe, lead-free, and microwave-safe construction makes it a versatile piece for storing dry goods or serving food. Just keep in mind that the waterlock lid is not designed to be a standard airtight storage seal for pantry items.