Mason jar, heatproof, lid available separately, 435 ml

Lidless glass mason jar for conserving vegetables and fruit, making jams, chutneys, etc. A vacuum will develop during the process, sucking the lid inwards somewhat. This helps you see whether preserving succeeded. The jar is suitable for sterilisation in the microwave, in a pan with water or in the oven. Always heat the glass gradually to avoid sudden changes in temperature.