Combine all ingredients and blend until smooth in a blender. Strain through a sieve, pushing as much liquid as possible, to make smooth. If the pulp has been used there is no need to strain. Pour in glasses and serve.
TIP: You can use Kefir instead of yogurt if you like. Kefir and yogurt are both cultured milk products, but Kefir is slightly different in that it is fermented, tastes more sour compared to yogurt, has a bit of a thinner texture and contains more active bacteria. We love it.