In a pinch? You can use canned fruits too. Simply drain off
the excess liquid first (in a sieve, in the sink) then put the fruit in
the blender and away you go.
You can even use frozen fruits but be aware that these may be a
little thinner in consistency after puréeing.
To combat a too runny
consistency, let the frozen fruit come to room temperature first,
allowing excess water/juice to drain off naturally (in the sink, in a
If it's still too runny, add an apple to the mix!