If your prunes aren’t already pitted, remove the pits. Use about 1 cup of pitted prunes for a good batch of puree.
Place the prunes in a bowl and cover them with warm water. Let them soak for about 15-20 minutes until they are plump and soft.
Drain the prunes, reserving the soaking water. This water is rich in nutrients and can be used to adjust the consistency of your puree.
Transfer the soaked prunes to a blender or food processor. Add a small amount of the reserved soaking water to start, and blend until smooth. You can add more water if needed to achieve your desired consistency.
Once blended, the prune puree can be served immediately or stored in an airtight container in the refrigerator for up to 3 days or in the freezer for up to 3 months.