Fido jars in 3 sizes
Verified Buyer Reviewed by luvsplants from Idaho on Thursday, October 6, 2016
I use these for fermentation and they work great for making sauerkraut, beet kvass, dilly beans, kimchi, etc. The CO2 escapes around the seal, but oxygen doesn't come in. This works as good as an airlock. I bought two sets of these jars.