This syrup is delicious on pancakes; the tart berries and ripe orchard fruits are a perfect counterpart to maple's mellow sweetness.
Combine fruit and syrup in a small bowl. If using berries, press them with the back of a spoon until they just start to break apart. For a smoother syrup, press through a sieve.
Split vanilla bean, if using, and scrape seeds into mixture. Add bean to bowl.
Transfer mixture to a bottle or another container, cover, and refrigerate. Use within 3 or 4 days. Before serving, the syrup can be warmed in a small saucepan over low heat to desired temperature.
To flavor the syrup, you can use just one kind of berry or fruit, or a combination of favorites.