you dont want a method mix to be nutritional, as it'll fill 'em up and stop them feeding. lots of coarse, smelly bits 'n' pieces to get the smell of food around, but with little food value.
ground particles, a bit of low oil pellet, bit of propietary groundbait, condensed milk or nesquik (for that luvly cloudy effect) and a little bit of fruity flavouring. you cant really go wrong!