Put the pomegranate juice and sugar in a pan set over a low heat. Stir until the sugar has dissolved.

Remove from the heat. Leave to cool. Add the orange blossom water, then pour into a sterilised bottle. Will keep for two weeks.

For the diabolo, pour 30ml of the grenadine into a tall glass, add the ice, and top up with the lemonade. Stir gently to combine, then garnish with a mint sprig.