What you will need:
1 large glass
1 long wooden skewer
Juice of 2 lemons (ripe)
1 litre of sparkling water (fresh)
Caster sugar to taste
Blue food colouring
6 blueberries (ripe)
6 blackberries (ripe)
1. Squeeze lemons, add the juice to the sparkling water and add sugar until its sweet enough for you.
2. Add enough food colouring so that it is the perfect shade of blue (you won't need a lot).
3. Carefully thread the berries onto the skewer-alterning between the blueberries and the blackberries. The length of your skewer will depend on the height of your glass.
4. Place the skewer into the glass and enjoy your drink!