A prune is a dried plum, and whilst it is true that all prunes are plums, not all plums can be prunes. This is because to become a prune, the plum needs to have a soft, thin and sweet skin, and the fruit needs to be full of natural sugar so that is will preserve well when dried. Crazy Jack prunes come from France and California. They have a sweet, rich flavour that is better than any processed sweet. The combination of fibre, natural sugars, and antioxidants in prunes, as well as their great flavour, make them a superb healthy snack. These soft prunes have a water content of 30% making them softer compared to a dried prune.