I found this last night in the Andy Little book 'My Passion For Carp' page 58:
"The bait I used was very similar to the one I had used at Darenth during the previous winter........... I had slightly changed the original nix of Casien, Lactalbumin, Calcium Casinate and Gluten etc. In the new mix I substituted some of the lighter milk protiens with Semolina........ ended up with a heavier Casein, Semolina and Gluten"
Goes on to say it had a maple flavour, 20ml in a 10oz mix!! also says he used to add granulated sugar in boiling water as a sweetner!