Ingredients:

240 ml /9 fl oz good-quality fresh plain yoghurt
200 ml / 7 fl oz water
3 tbsp sugar, or to taste
2-3 tsp lemon juice, or to taste
1 small lemon, zest only

To serve
ice cubes
2 sprigs fresh mint

Directions:

In a blender, blend together the yoghurt, water, sugar, lemon juice and zest until light and frothy.

Taste and adjust the sugar and lemon to your liking.

To serve, pour into a tall glass filled with ice cubes and mint.