Eating protein helps build muscle, boosts the metabolism and leads to feelings of fullness but many Britons do not eat enough high-protein or high-fibre foods, according to the NHS. Experts have shared the simple cupboard staples foods people can pick up to enhance their diet, and there are many they may already have at home. Qualified nutritional therapist Alexandra Gorton shared the “surprising” foods in your trolley that are packed full of protein. This included peanut butter, cheddar cheese, sausages and cheese and onion sandwich filling, tortilla chips, baked beans, toastie loaf and even …