Simply Sauer Vegetable Fermentation Kit for Wide Mouth Mason Jars - Oxygen Pump and Airlocks - 5 Piece Kit

I have many fermenting vessels and tools but this one is fool-proof, use these along with the Simply Sauer glass weights and you can't go wrong. I pull a slight vacuum at the beginning to remove oxygen, then when the ferment activity is done I use the vacuum again to keep out the nasties. It's perfect for removing some cabbage etc. for a taste and then pulling a vacuum which will remove the oxygen since there is no longer Co2 production to push the oxygen out again. Will definitely buy some more of these and the glass weights. I also like the ability to see through the top, which gives these a great advantage over similar vacuum tops.

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Come prodotto è davvero ottimo e mantiene la pressione, se maneggiati con cura durano a lungo.

I've had a set for a few years and used them in making Kefir. They work very well and the tops are still perfect. Now this new set will be to ferment vegetables. So, having purchased these for the 2nd time speaks for itself. They are simple, durable, effective and a great value.

These are great. The lids screw on hand tight, the air is pumped out and a negative pressure is maintained by the seal in the lid until CO2 replaces the partial vacuum. Brilliant. Buy once with the pump and any other purchases can be just the lids which are around a fiver cheaper.