Lingonberry
Lingonberry (or Cowberry) takes it name from the Swedish for heather or Ling, and is from the same 'Vaccinium' family as the blueberry and cranberry. Like those plants - Lingonberries require damp acid soil conditions to grow well. They are however ideal for growing in pots - so long as they have an ericaceous compost. Their naturally spreading habit means that they are especially useful as an under-planting around blueberries.
The berries collected in the wild are a popular fruit in northern, central and eastern Europe, notably in Nordic countries and Baltic states. Their attractive pink flowers are followed by tart, juicy red fruit that can be used for jams, pie fillings, sauces and drinks. The raw fruits are also frequently simply mashed with sugar, which preserves most of their nutrients and taste.