A super simple smoothie to make, using the frozen berries gives a great semi-frozen texture. The flax seed and spinach add fibre and protein to this smoothie making it a well balanced afternoon snack.
Squeeze the grapefruit juice and hold back half a cup of coconut water. Blitz everything in Vitamix or smoothie maker. Add the rest of coconut water if smoothie is too thick.
Serve straight away.