Use freshly squeezed lemon juice for the tastiest results.
A short glass or tumbler is perfect for this one.
Fill the glass with the crushed ice.
Pour the Bombay Sapphire, lemon juice and caster sugar into the glass and stir well.
Drizzle the summer fruits squash over the top and watch it ‘marble’ through the drink.
Top up with more crushed ice and garnish with one blackberry and a wedge of fresh lemon.