The most refreshing thing on a hot summer's day, with a sharp, zesty taste. And it's surprisingly easy to make. If the children don't like fizz, use still water instead.
150g sugar (approx)
150ml boiling water
1 litre fizzy water
Dissolve the sugar in the boiling water and pour into a jug. Squeeze the lemons and pour the juice into the jug. Stir, top up with fizzy water and plenty of ice. Adjust the water to taste.