The fruit of the mulberry, similar to the blackberry, is
an aggregate fruit that is composed of many smaller fruits
called drupes. Therefore, botanically it is not a true
berry. The skin is smooth and fragile, and the color
changes from green to red to dark purple as it matures.
There are also white mulberry varieties that exist.
Mulberries have a stem that persists on the fruit when it is
picked from the tree, distinguishing it from blackberries