Rob, Cambridge Diet (CD) do a ready made 'shake' in a carton, just the size of a small carton of juice, which is dead convenient. No making up, drink on the go etc. They do them in Chocolate, Banana and Strawberry. They are so handy for when you are out for the day or just don't have the time to make a real shake or soup etc. Some people had only 3 tetra's a day. Wish Exante would do them though as like I said I like to save my bar as my treat.