Large Capacity: The jar holds approximately 900ml, suitable for substantial fermentation projects. Quality Materials: Made from durable glass, wood, cotton and linen, silicone, and paper, ensuring longevity and repeated use. Sealed Lid: Comes with a wooden lid that provides a tight seal, perfect for storing perishables. Breathable Cover: A cotton and linen cover with an elastic band allows for air circulation, essential for natural yeast fermentation. Temperature Monitoring: Includes a temperature indicator card for real-time temperature tracking inside the jar. Introducing our versatile Sourdough Starter Jar Kit, designed for both novice and experienced bakers. This kit features a spacious jar with a wide mouth, making it perfect for all your starter needs. It's not only ideal for fermenting sourdough starters but also serves as an excellent storage solution for various kitchen items like dried fruits, multigrains, and more. Convenient Design: Features a large opening for easy access and cleaning, along with a silicone spatula for mixing and retrieving contents. Color: As Shown Material: Glass Package Contents: 1x scraper+1x temperature measuring sticker+1x black rubber band+1x cloth cap+1x blackboard sticker+1x dust-free pen