Put the ginger into a pan and add the cinnamon, cloves, sugar and the zest and juice of the lemons or limes. Add the water.
Bring to the boil, stirring constantly. Boil for 10 minutes. Stain into a jug and allow to cool. Check the flavour adding more water, lemon or lime juice or sugar as needed.
Chill and serve with ice cubes and slices of lime or lemon.