At KALDI Coffee Farm, I found a rare "100% dry prune drink". It is "Pruned France" from France. I was curious, so give it a try.
Prune de France
A drink made with 45 dry prunes that do not use sugar or additives. The only raw material is dried prunes from France.Deep colored prune drink. You can fully enjoy the taste of sweet and sour and rich dry prunes. It is quite rich as it is, so you may divide it with water or carbonated water. Recommended for ice cream and yogurt toppings.
Each bottle contains 750 ml and the price is 864 yen (tax included). It's a little expensive, but if you like dry prunes, why not give it a try!