KNEVA 2-Jar Fermentation Kit

Two jars, two ferments at once, every part included. Sourdough starter under a breathable cotton cover, sauerkraut and kimchi under an airlock, milk kefir either way. The kit covers all of them, so you're not buying jars, weights, airlocks and lids separately.

What each jar can do

• Sourdough starter — cotton cover and band. Breathes, keeps fruit flies out, and the elastic band marks your feed time.
• Sauerkraut, kimchi, pickles — glass weight, stainless lid, airlock. The weight holds vegetables under the brine; the airlock vents CO₂.
• Milk kefir — cotton cover, or the lid with the silicone plug seated.
• Water kefir and other fizzy ferments work too.

Why the parts matter

• 304 stainless lids — brine won't rust them. The tinplate lids sold with most canning jars will.
• Solid glass weights — keep vegetables under the brine, where mould can't reach. This is the reason most first batches fail.
• Three-piece airlocks — gas out, oxygen in check. No daily burping, no popped lids.
• Silicone spatula — non-reactive with living cultures, and it gets into the corners.
• Volume-marked glass — read your feed straight off the jar.
• Wide mouth — your whole hand fits, for packing and cleaning.

In the box

• 2 × 900ml wide-mouth glass jars, volume-marked
• 2 × 304 stainless steel lids
• 2 × three-piece airlocks
• 3 × silicone plugs (2 fitted to the lids, 1 spare)
• 2 × solid glass fermentation weights
• 2 × breathable cotton covers
• 2 × elastic day-and-hour schedule bands
• 1 × silicone spatula
• 1 × chalk marker
• 4 × black label stickers

Specs

• Capacity: 900ml per jar
• Mouth: wide
• Lids: food-grade 304 stainless steel
• Weights: solid glass with a lift knob
• Dishwasher safe: jars, lids and weights. Covers and bands: hand wash

FAQ

Can I run two different ferments at once?

Yes — that's the point of the pair. Starter in one jar under a cotton cover, sauerkraut in the other under an airlock.

Do I need to burp the jars?

Not with the airlock fitted. The three-piece airlock vents CO₂ on its own. If you're using the cotton cover instead, the cloth lets gas escape.

Can the jars go in the dishwasher?

The jars, stainless lids and glass weights can. Hand-wash the cotton covers and elastic bands.

Are the jars suitable for sourdough starter?

Yes. Use the cotton cover rather than the airtight lid so the culture can breathe, and use the band to track your feed time.