1. Cow’s milk
MAKING up to 80 per cent of the protein found in cow’s milk, this is one of the best sources of natural casein possible. 500ml of semi-skimmed cow’s milk contains roughly 20g of protein with full-fat milk containing slightly less protein and more fat.
Next: page 2 of 5 – Cream cheese and salmon
Robert Seaborne BSc (Hons), MS