The short answer is about 200ml with 40g-50g serving but there is no need to be precious about it. You can add as much or as little as you like.
Want your shake thicker add less milk or add ice. You could add 50-60ml (a large gin measure) of hot water or warm milk to make instant porridge or a tiny splash of coconut milk to make protein or energy balls.
Don't forget you can also add Purition on top of 125g (ish) of plain yoghurt.
If using water please add some ice and fruit before blending otherwise your shake will be watery and you will be disappointed.
Purition is made better to be better for you, no food additives or refined powders to make it thicker or improve the feel. We will never compromise your health adding anything less than the very best, whole and natural ingredients.
You will thank us in the long run.
Try some samples:
Nutrition at a glance: