Been recently looking into feeding the dogs a better diet and more natural rather than all this processed crap, one thing I've started doing to get some natural vitamins and minerals into them is lightly boil a mixture of swede, sweet potatoes, carrots, broccoli, tomatoes and spinach in a pan then drain the water and get the hand blender into it and blend it all up, then let it cool down and spoon it into those plastic party cups and bung them in the freezer, then every other day take one cup out of the freezer in the morning let it defrost and mix it into there feed at night (mixture of raw m