Filipino calamansi juice (Calamansi juice)

1. Bring the sugar to the boil with 200 ml of the water in a small pan until fully dissolved, then cool – this is your sugar syrup.

2. Wash the calamansi, halve them and squeeze over a sieve so the seeds don't get into the juice.

3. In a jug mix the calamansi juice with the cooled syrup and the remaining cold water.

4. Taste and adjust with more water or syrup – it should be refreshingly tart.

5. Fill the glasses with ice cubes and pour over the juice.

6. Garnish with a few halved calamansi and mint leaves and serve at once.

Tip: The most popular homemade drink of the Philippines, a refresher for hot days; alcohol-free. If you can't find calamansi, mix 2 parts lime juice with 1 part orange juice – that comes closest in flavour.