Quality Material, Safety and Durability Fermenter is made of high borosilicate glass, which is resistant to high temperature and temperature difference, and can withstand the frequent conversion between high temperature sterilization and low temperature refrigeration, and is not easy to be broken and has a long service life. The glass is non-toxic, odorless and chemically stable, and does not react with the sourdough starter to ensure the pure flavor of the starter. Food-grade stainless steel mixing spoon, hard texture, not easy to rust, deformation, with anti-scald and non-slip handle, easy to stir the leavening, safe to use. Scientific design, professional fermentation 32oz (about 946ml) large-capacity design, not only can meet the needs of daily sourdough bread making at home, but also suitable for batch cultivation of fermentation seeds. The clear scale on the jar body accurately marks the capacity, making it easy for you to accurately control the proportion of fermentation seeds and the progress of fermentation. The wide-mouth design makes it easy to access and stir the fermentation seeds, and the combination of silicone sealing ring and metal snap-on lid provides excellent sealing performance, effectively isolates air and impurities, creates a stable fermentation environment, and locks in the activity and flavor of the fermentation seeds. MULTIFUNCTIONAL USE, CONVENIENT STORAGE In addition to fermenting sourdough bread, this glass jar can also be used as a storage container for jams, kimchi, honey and other ingredients, meeting your diverse storage needs. The transparent glass body allows you to see the status of the ingredients inside the jar at a glance, making it easy to access them in a timely manner. The matching stirring spoon is handy for stirring thick ingredients such as leavening seeds and jams, adding convenience to your kitchen operation with its multi-functionality.