Are Glass Fermentation Weights for Wide Mouth worth it?
A top pick in Home Brewing & Wine Making on Amazon (#2 when we checked, Oct 10, 2026)

Worth it if you ferment sauerkraut, kimchi, or vegetable pickles in wide-mouth mason jars and want four smooth glass weights that help keep vegetables under brine and lift out easily by their handles.
Good to know: If your jars are not wide-mouth or you need a close-fitting weight for a particular opening, check the 2.6-inch size against your jar before choosing.
Glass fermentation weights keep vegetables tucked under brine
The sink is where this either works or doesn't, so here's what I'd want to know first: the Glass Fermentation Weights for Wide Mouth are smooth glass discs measuring 2.6 inches by 2.6 inches, supplied as a set of four. Their main job is simple. They sit on the vegetables and help keep active ferments below the protective brine.
That pressure matters during a jar ferment. The listing says these weights are heavy enough to keep the contents down, unlike lighter discs. For you, that means less fiddling with floating vegetables while sauerkraut, kimchi, or pickles are fermenting. The result is a more contained setup inside the jar, using a purpose-made part of a fermentation kit rather than an improvised object.
The second useful choice is the wide lift handle. Instead of fishing a glass disc out with your fingers, you have a designated point for inserting and removing each weight from a wide-mouth mason jar. Smooth glass also makes the weights easy to clean and sterilize before use. And honestly, that's the whole trick: the weight handles the brine line, while the handle and smooth surface make the repetitive jobs around that weight less awkward.
You get four reusable glass weights in one set, each designed for the same basic fermentation task. That gives you useful coverage for several jars or spare weights during a batch, with easy cleaning built into the smooth glass design.
Great for
- Fermenting sauerkraut in wide-mouth mason jars
- Making kimchi or vegetable pickles at home
- Preparing several jars and wanting four weights
- Wanting smooth glass that is easy to clean
- Preferring lift handles over fishing out discs
Maybe not for you if
- Your jars are not wide-mouth
- You need a different diameter for your jar opening
- You want a weight with a confirmed close fit for your specific jar
The counter case is straightforward: if wide-mouth mason jars are already part of your fermentation routine, this set supplies four glass weights for keeping sauerkraut, kimchi, and vegetable pickles below the brine. The lift handles make removal less fiddly, while the smooth glass is easy to clean and sterilize. Check the 2.6-inch size against your jars first, since buyer feedback is mixed on fit. For the right opening, it is a practical addition to a fermentation kit.
Amazon shoppers rate it 4.6 out of 5 across 1,148 ratings. That is their number, not ours.
Quick answers before you buy
How many fermentation weights are included?
Four glass fermentation weights are included, along with a plastic-free gift box.
What size are the weights?
Each weight is listed as 2.6 inches by 2.6 inches. Check that measurement against your wide-mouth mason jars before buying.
Can these weights be cleaned before use?
Yes. The smooth glass is listed as easy to clean and sterilize before use with sauerkraut, kimchi, and vegetable pickles.
Do the weights have handles?
Yes. Each weight has a wide lift handle designed to make inserting and removing it from a wide-mouth jar easier.
What are these weights designed to do?
They are designed to help keep active ferments under the level of the protective brine.
The spec sheet, for those who want it
| Brand Name | Country Trading Co. |
|---|---|
| Number of Pieces | 4 |
| Unit Count | 4 Count |
| Number of Packs | 1 |
| Included Components | 4 Glass Fermentation Weights, Plastic Free Gift Box |
| Item Type Name | Fermentation Weights |
| Model Number | RE0047 |
| Manufacturer Part Number | RE0047 |
| Material Type | Glass |
| Color | Clear |
| Product Style | Compact |
| Shape | Round |
| Item Dimensions L x W | 2.6"L x 2.6"W |
| Item Weight | 0.7 kg |
| Closure Type | Lid |
| Material | Glass |
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