Preserve tomatoes as they ripen. The microwave can help save time and energy during summer months. Makes one, 1-litre jar.
- Choose ripe but firm tomatoes. Wash and prick the skins with a needle. Place in a 1-litre, sterilised preserving jar. Top with boiling water to within 1cm of the rim.
- Using an oven cloth, carefully place the jar in the microwave and cook on high (100%) power for 4-5 minutes or until bubbles appear on the outside of the tomatoes and the skins start to split.
- Remove from the microwave and top up with boiling water. Seal with a vacuum seal (prepared as per directions on the seal) and a screw-on band. Leave until cold and the vacuum draws down the seal tightly — the top of the seal will be concave.