55% coconut water
Blood is made up plasma and blood cells. Plasma comprises 55% of blood fluid and is mostly water (90% by volume) and contains dissolved proteins, glucose, mineral ions, hormones, carbon dioxide, platelets and blood cells themselves. Blood cells are mainly red blood cells, white blood cells and platelets. Red blood cells are the most abundant and they contain haemoglobin, an iron-containing protein.
The plant version of haemoglobin is chlorophyll which is a green pigment based around a magnesium ion as opposed to iron (haem). Both haemoglobin and chlorophyll exist to obtain energy.
Coconut water is a natural liquid closest in structure to blood plasma and has been used in the war instead of plasma when supplies were low!!
So combine 55% coconut water and 45% greens (by volume) and you have a BLOODy great smoothie!