With the Kilner fermentation set 5 litres, you can now easily make larger quantities of fermented foods such as sauerkraut, kimchi, pickles, etc. yourself. The silicone membrane with glass weight keeps the pickled vegetables under the surface of the brine solution, the ventilation valve in the silicone lid allows the gases that are produced during the fermentation process in the jar to escape, while no air gets into the jar from the outside. The Kilner name has stood for innovatively designed quality glass products for over 177 years. Households around the world rely on Kilner jars to preserve, preserve, store and transport fruits and vegetables. With new and innovative ideas, Kilner continues to develop its range and delight customers worldwide with a variety of useful and sustainable products.