Chilled yogurt (curd) – ½ cup
Water – 1¼ cups
Cucumber – 1
To Grind:
Green chilli – 1
Coriander stem – a handful
Ginger – 1-inch piece
Curry leaves – 10
Salt - ¼ teaspoon
Kala namak – a pinch
Note: You could use a hand blender too.