Hmmm, I pretty much thought that all the pre op diets were similar but I could be wrong. I know that you can drink other stuff (low calorie and low fat) like Bovril, Oxo, Teas/Coffees. You can have x3 sticks of sugar free gum a day and some sugar free jelly. Do you just hate cows milk? How about dried milk like Marvel? I hope this helps a bit x