Frozen banana and/or avocado
sweetener eg sugar, honey, flavoured syrups
flavouring eg vanilla essence, coffee, flavoured syrups etc
I just made one with frozen avocado, frozen banana, rice milk, vanilla essence, caramel flavoured syrup, brown sugar and cinnamon, and it was AMAZING.
(Inspired by the last post making me think about milk drinks and remembering I wanted to try this, since the avocado sorbet I got makes great smoothies but is pricey)