For fermenting in jars, common options include:

• Glass jar weights: Designed for wide-mouth or regular-mouth jars; some have easy-grip handles for simple removal.
• Plastic jar weights: Made from food-contact plastics; lightweight and durable.
• Crock stones: Paired weights sized for ceramic fermenting crocks.
• Kits: Bundles that include weights plus fermentation lids, airlocks, and gaskets.

Look for non-porous, food-safe materials that sit flat and cover most of the jar’s surface. Matching the weight to your jar mouth (wide or regular) helps keep produce fully submerged. Many shoppers also prefer dishwasher-safe pieces for easy cleanup. You can find individual weights and complete starter kits on Walmart’s site.

Weights are helpful anytime produce tends to float and you want it below the brine. Consider using them when:

• Fermenting shredded veggies: Sauerkraut or kimchi can lift during active bubbling.
• Pickling whole pieces: Sliced cucumbers, carrots, or peppers often rise.
• Small-batch jars: In jars, there’s less room for displacement, so a weight supports consistency.
• Warmer rooms: More fermentation activity can push solids upward.

Keeping ingredients submerged may help limit surface growth and support even fermentation. Many kits pair a weight with a lid that lets gas escape, which can reduce burping. Results can vary with recipe, cut size, and salt/brine strength, but a weight is a simple tool that can improve day-to-day reliability.

If you’re starting today without purpose-made weights, some home fermenters use short-term workarounds:

1. Smaller jar inside a jar: Nest a clean, food-safe jar filled with brine inside the larger jar.
2. Sealed food-safe bag: Place a clean bag filled with brine on top to press produce down.
3. Vegetable barrier plus pressure: A trimmed cabbage leaf or similar can create a cap under a light, food-safe weight.

Use brine (not plain water) so any leaks don’t dilute salinity, and avoid porous stones or reactive metals. These approaches can work temporarily but may need more monitoring. For ongoing batches, dedicated glass or plastic fermentation weights available at Walmart offer a simpler, repeatable setup.

A good fermentation weight balances fit, stability, and easy care. Helpful qualities include:

• Non-porous material: Glass or glazed ceramics are easy to clean and won’t absorb flavors.
• Right fit: Sized for wide-mouth or regular-mouth jars so it sits below the shoulder and covers most of the surface.
• Sufficient mass: Heavy enough to keep solids beneath the brine without tipping.
• Smooth edges: Reduces scratching and makes placement gentler.
• Easy removal: A center knob or grip helps lift the weight out.
• Low-maintenance: Many shoppers prefer dishwasher-safe designs for quick cleanup.

Choosing weights that match your container and workflow can help make day-to-day fermenting more consistent.

Start by matching the weight to your container type:

1. Identify the mouth: Most jar weights are labeled for wide-mouth or regular-mouth Mason jars—choose the version that matches your jars.
2. Check dimensions: Review the product’s listed diameter and height; the disk should be slightly smaller than the jar’s inner opening so it slides in easily.
3. Mind the shoulder and lid: Pick a profile that sits below the jar shoulder and still allows your lid (standard, fermentation, or airlock) to close.
4. Crocks need pairs: For fermenting crocks, look for paired stones sized to that crock.

When in doubt, measure your jar’s inner opening and compare to the product details on Walmart’s site. Fit can vary by jar style.