Start with a size that fits your recipe and storage space, then allow room for bubbles and expansion.

• Small batches: Half-gallon (64 oz) jars work well for quick trials and kimchi/sauerkraut test runs.
• Everyday ferments: 1 to 2 gallon jars offer more capacity for pickles, kombucha, or kraut, with space for an airlock lid if included.
• Larger projects: Carboys and buckets in the 3–8 gallon range are commonly used for beer or wine.

Leave 10–20% headspace to reduce overflow. Wide-mouth openings make packing vegetables easier, and handles can help when moving heavier jars. Checking the product capacity and dimensions on the listing can simplify planning.

Each material has trade-offs, so the best option depends on your project and preferences.

• Glass: Non-reactive and easy to see through, common in jars, carboys, and swing-top bottles. It’s a popular choice for pickling and kombucha.
• Stainless steel: Durable and odor-resistant, often used for larger batches in fermentation buckets for brewing.
• Food-grade plastic: Lightweight and budget-friendly for storage or short-term ferments; check temperature and cleaning guidance in the product details.

For carbonated drinks, look for bottles designed for pressure with airtight seals. If you prefer dishwasher cleaning, confirm dishwasher compatibility on the item’s page, as care instructions can vary by product.

They’re used at different stages and for different reasons.

• Airlock lid (or water-sealed jar): Often used for primary fermentation to vent gas while helping reduce outside air exposure. It’s common on larger jars.
• Swing-top bottle: Typically used for storing finished kombucha or a brief second fermentation to build fizz, thanks to an airtight stopper.

Many makers use a jar with an airlock for the main ferment, then transfer to swing-top bottles for flavoring and carbonation. Leave some headspace and monitor pressure, especially in warmer rooms. Product pages usually note lid type, so you can pick what fits your workflow.

A consistent routine can help reduce off-odors and improve results, but preferences vary.

1. Rinse bottles soon after use to prevent residue from drying.
2. Wash with warm water and mild dish soap; use a bottle brush for corners.
3. Disassemble parts (caps, gaskets, airlocks) and clean them separately.
4. Rinse thoroughly to remove soap. If desired, apply a food-safe sanitizer per its instructions.
5. Air-dry upside down on a rack; avoid towels that may leave lint.

Check product pages for care specifics like “dishwasher safe” or temperature limits. Avoid harsh abrasives that may scratch surfaces, and inspect glass for chips before reuse.

Look for containers designed to hold pressure and seal tightly.

• Swing-top bottles: Common for kombucha, kefir, or soda; the gasketed cap helps retain carbonation.
• Capacity: Smaller sizes (around 8.5–16 oz) are convenient for serving, while larger bottles (up to ~1 liter) suit bigger pours.
• Build: Thick glass and an airtight stopper are typical features.

Leave some headspace, chill before opening to reduce foaming, and store out of direct sunlight. It’s helpful to open one test bottle to gauge carbonation before the rest. Always review the item description for sealing style and care guidance.