Ingredients

2kg castor sugar
1 litre water
30g citric acid
30g tartaric acid
juice of 6 large lemons, strained
finely grated zest of 2 lemons

Method

If the lemons are not from your own tree, scrub them well with hot water before proceeding to zest or juice.

Dissolve sugar in water over heat in a non-aluminium stockpot. Add citric and tartaric acids. Stir to ensure that all is completely dissolved. Cool. Stir in juice and zest, and bottle into clean, dry bottles. Dilute to taste with water, lemonade, soda water or mineral water.

Makes 2 litres