Lakeland Fermentation Jar with Air-Release Valve 1L 5 "Fabulous Fermentation" Mrs Anne Wood 18 February 2021 Since the pandemic began I have tried to ensure my family are eating a more healthy diet. More people are now aware that fermented foods such as saurkraut and kimchi improve your gut bacteria which really enhances your immune system. This jar is ideal for anyone wishing to ferment foods. The wide neck is easy to use and the valve system is brilliant, no messing around. It's a good size jar too, very convenient.