In terms of raw materials, the main ingredients of prune juice are water and prune juice, while the ingredients of prune paste include prune juice, water and additives. From a health point of view, prune juice seems to be healthier because it contains fewer additives.
In taste, prune juice is sour and refreshing, while prune paste is greasy. This means that if you like sour taste and refreshing taste, then prune juice may be more suitable for you. However, if you like rich flavor, then plum puree may be more to your taste.
To sum up, prune juice and plum puree have their own advantages, and which one to choose depends on personal tastes and needs.