Fermentation Jar: Medium
Best fermentation vessel for home cooks crafting small-batch artisanal ferments.
The Medium Fermentation Jar from Sarah Kersten Studio is designed for enthusiastic fermenters, offering a generous 3.5-quart capacity. Its wide mouth allows for easy filling and access. Crafted with an ancient waterlock seal design, it creates an oxygen-free environment, which is ideal for successful fermentation. Simply pack your ingredients, place the lid, and fill the water channel to initiate the process. This jar comes with a set of stoneware weights to keep your ferments submerged. Available in various studio glazes, it combines functionality with aesthetic appeal.
$185.00
Owner Satisfaction
4.7
/ 5
Category Rank
2
/ 275
#2 in Fermentation & Pickling Crocks
Price vs Category Average
+69%
Above average
Height
9.524.13
/ inches ( cm)
Who it's for
- Beginners needing foolproof vegetable submersion for safer ferments
- Fermenters prioritizing mold prevention and consistent results
- Design-conscious cooks seeking beautiful, permanent kitchen counter decor
Who should skip it
- Users needing lightweight or highly durable kitchen equipment
- Budget-focused hobbyists testing the waters of fermentation
- Visual learners who prefer monitoring progress without opening the lid
Performance breakdown
Seal Integrity
The traditional waterlock design creates a perfect oxygen-free environment for ferments.
Submersion Efficiency
Included stoneware weights effectively keep ingredients beneath the brine surface.
Ease of Cleaning
Wide mouth design allows for effortless access and thorough scrubbing.
Build Quality
Durable stoneware construction offers both functional longevity and heirloom-grade aesthetics.
Capacity Utility
The 3.5-quart volume is the sweet spot for consistent batch fermenting.
Aesthetic Appeal
Hand-applied studio glazes elevate this tool into a beautiful countertop centerpiece.
Key Specs
Height
9.5 inches (24.13 cm)
Capacity
3.5 quarts
Material
Stoneware
Seal Type
Waterlock seal
Features
- Wide mouth for easy filling and cleaning
- Waterlock seal creates an oxygen-free fermentation environment
- Includes stoneware weights for submersion
- Available in multiple studio glaze finishes
- Ideal for sauerkraut, kimchi, and other ferments
What customers say
Customers appreciate the Medium Fermentation Jar for its exceptional craftsmanship and elegant design. Reviewers frequently highlight the beautiful glaze and sturdy build as standout features that elevate any kitchen. The water seal design earns praise for its reliability and ease of use during the fermentation process. While the cost reflects its artisanal nature, users feel the durability and aesthetic appeal justify the investment. This jar serves as a functional piece of art that makes home fermenting a joyful and seamless experience for beginners and experts alike.
Know before you buy
The waterlock design creates an airtight barrier that allows carbon dioxide produced during fermentation to escape while preventing oxygen from entering the jar. This oxygen-free environment is essential for encouraging beneficial bacteria growth and preventing mold.
Yes, the jar comes with custom-fitted stoneware weights designed to hold your vegetables beneath the brine. Keeping ingredients submerged is the most effective way to ensure a safe and successful fermentation process.
The 3.5-quart capacity is a versatile size that works well for both standard batches and larger projects like sauerkraut or kimchi. While it is spacious, it is compact enough to fit comfortably on most kitchen countertops.
The stoneware is durable and can be cleaned with warm, soapy water. Because of the wide mouth, it is easy to reach inside for thorough scrubbing, though we recommend avoiding harsh abrasives to preserve the studio glaze finish.
You should check the water channel periodically to ensure it hasn't evaporated, especially in dry environments. Keeping the channel filled is necessary to maintain the airtight seal required for your ferment.
Still have a question?
Ask Hayley anything about this product before you decide.