The berries can be eaten raw, but they can be very tart and at times bitter. The same can be said for "raw stirred lingonberries" that the swedes are so fond of. Ever eat a raw cranberry ? I prefer my preserves sweet, which is why recipe differs from that of the Scandanavians.
Lingonberry Jam Ingredients
3 cups Lingonberries3 cups water
1 cup sugar
1/2 pkg Fruit Pectin
Wash and crush the berries.
Place the Lingonberries and water in a large pot.
Place sugar in a separate bowl.
With the berries cooking in the slightly hot pot, add Fruit Jell Pectin. Bring mixture to a full rolling boil over high heat, stirring vigorously.
Skim off any foam from the surface before adding the sugar once the mix hits a rolling boil, stir continuously.
Continue to boil for 2 - 3 full minutes while stirring.
Remove from heat and fill hot, sterile jars leaving 1/4 inch HEAD-SPACE.
A more traditional lingonberry Jam can be made by placing the lingonberries in a large pot of water and bringing it to a boil for about 10 minutes. You simply skim off any surface foam and add only a minimal amount of sugar, roughly 1 part sugar to 3 parts berries and with no added pectin.
The results are at times very tart, which some people like. It also doesn't always jell properly without the pectin.
Note: 1. Wikipedia - https://en.wikipedia.org/wiki/Lingonberry_jam
How to Grow Lingonberries