Fermenting Jar With 1 Way Air Release Vent - 1 Litre, 2 Pack - Ideal for Safe Fermentation for Kefir, Kimchi, Sauerkraut, Sourdough Starter, Overnight Oats - Fermentation Jars Pack of 2

These have now helped me to produce 100 batches of kefir. Easy to clean.

All good

Looked ok and bigger than I expected but the glass is very thin and the base came cleanly off the bottom of one of them when washing. There are two rubbery parts on the lid one of which moves to an up or down position and I have no idea what to do with it on the one remaining jar I have as there were no instructions. closing it may cause the gasses to build up in it when fermenting jar and cause it to crack but if it's left open then it could let unwanted bacteria and mould spores in.

Fermentation containers, so 1st one i tried sterilising in autoclave, plastic lid melted and cheap glass cracked. Tried a semblance of sanitising on 2nd one with just boiling water (at least), and glass cracked. I have a useless lid left from this purchase. No idea if they work, maybe as long as they're not clean.

Good for fermentation. However, if you want to fizzy your ferment I did not figure out how to close it to keep the gas in if you want. Instruction is more about fermenting vegetables.

Used to make kefir.

High quality and extremely well packed so arrived in perfect condition, very good value.

Tried to sterilise with boiled water, but it broke one of the jars. Didn't expect it to be so delicate. There were no instructions with the jars, or warnings. As it was something which many people would sterilise with heat there should have been a warning.