Interesting. I hadn't heard that smoothies are supposed to contain ice. Mind you, I do live in a country where people debate the possible existence of warm weather alongside the possible existence of God. I tend to think of them just as a mixture of juices and pulp; and from what I've seen, the all-important smoothification ingredient is banana, as that's where the consistency comes from. I guess the trick is in getting the balance of liquid and gloop right.

Orange, pineapple, peach, mango, banana. Maybe a dash of lime. And absolutely no chocolate! Fruit juice doesn't freeze well, by the way. I remember trying to make ice lollies years ago with orange juice. It just forms a sticky mess. You have to mix it with something to get it to freeze.