Use a fermentation crock for larger batches

For serious kimchi making, invest in a traditional Korean onggi pot ($30-60) or a German-style water-seal fermentation crock ($40-80). These vessels maintain an anaerobic environment that produces more consistent, deeper-flavored kimchi than simple jars.

Why It Works

Fermentation crocks allow CO2 to escape while preventing oxygen from entering. This creates optimal conditions for lactobacillus bacteria and prevents surface mold. Traditional onggi pots are porous and breathe, which Korean cooks believe produces the best flavor.

Tips

• Water-seal crocks are the easiest for beginners — fill the moat with water and fermentation is hands-off
• Onggi pots are traditional but require more attention (they need to stay moist)
• A 2-gallon crock makes enough kimchi for a family for several weeks
• Clean crocks thoroughly between batches to prevent cross-contamination