Two interchangeable glass jars are included with this yogurt maker: a 1 liter jar and a 2 liter jar, so you can prepare small test batches or larger quantities as needed. The jars are equipped with a silicone ring and a negative pressure valve to help keep the yogurt fresh in the refrigerator, preserving taste and quality. Key benefits Flexible batch sizes: choose between 1 L and 2 L jars to suit flavor experiments or larger servings. Freshness and quality: the silicone seal and negative pressure valve help maintain yogurt freshness when stored. Easy operation: a userfriendly LCD touch screen offers quick, intuitive control and realtime status updates. Hassle cleaning: an inner glass bottle is removable for thorough cleaning without staining or lingering odors. What it does Automatic yogurt making at home: simply pour in milk, add lactic acid bacteria powder, stir evenly, and start with a touch of a button. The machine handles the rest, delivering consistent texture and taste. Realtime monitoring: the LCD (with clear display) provides current settings and process progress so you can track fermentation at a glance. Safe and hygienic design: the internal glass bottle can be separated from the unit for easy cleaning and maintenance. Key attributes Jars: glass 1 L and 2 L included Materials: glass jars with silicone seal; hygienic internal glass bottle Control: LCD touch screen with realtime display Performance: automatic yogurt fermentation with simple, repeatable results Maintenance: removable inner glass bottle for easy cleaning; minimal odor and stain retention Easy to clean The separate inner glass bottle is designed for straightforward cleaning, helping prevent stains and odors and ensuring a hygienic yogurtmaking experience. Use scenarios Everyday breakfast startup: produce fresh, readytoeat yogurt for morning smoothies or parfaits with fruit and granola. Flavor experiments and meal prep: make small test batches (1 L) to try different flavors, toppings, or sweetness levels before committing to larger jars. Cooking and baking base: use homemade yogurt as a base for dressings, sauces, marinades, or baking recipes, then store surplus in the fridge using the airtight jars. Notes This yogurt maker is designed to work with the included glass jars and the builtin fermentation process. Store produced yogurt in the refrigerator using the jars to maintain freshness and flavor.