Rowenberry
From RAWiki
You're either gonna love it or hate it!
This Rowenberry trecle or marmalade is made with berries from our own tree. Try it on toast or with meat.
With a bitter and refereshing taste some compare to grapefruit and very high levels of vitamin C, Rowens have long been regarded in European folklore as a magical tree. Also known as the European Mountain Ash, the Wiggy (or Wikki) Tree or the Rowen.