Firstly, cut and then squeeze your lemons to collect the juice. Next add lemon juice to your water. Add the icing sugar to the lemon-water mixture. Give it a good stir until dissolved!
To make the lemonade, mix the lemon and lime juice, raspberry syrup and caster sugar in a jug. Stir to dissolve the sugar. Add 575ml/1 pint water and plenty of ice.