It's said it was a plg test on the blood form. I had to eat 2 slices of thin bread, 3rd p's of jam, 5 tablespoons of cornflakes, 1/3 pint of milk (I had almond so hope that's ok!), and 150mls of orange juice.
There was a whole list of foods to choose from which included things like weetabix, shredded wheat, baked beans, berries etc...