This 3L Kilner jar allows you to create batches of your favourite fermented foods packed with vitamins, minerals and probiotic cultures. The silicone valve in the preserve jar lid will release the gas that builds up inside the jar during the fermentation process without letting air enter the jar. Use for live cultures of kimchi, pickles and much more.Set Contains: 1 x 3 Litre Kilner Fermenting Jar 1 x Silicone Lid 1 x Airlock 2 x Ceramic Stones 1 x Recipe Booklet H 32 x Dia 17 cm