Prepare 1.1 pounds (500 g) of fresh or frozen lingonberries. If you have fresh lingonberries, wash them thoroughly.
Pour the clean lingonberries into a pot. Add 1/3 cup of water to the pot and bring it to a boil.
Once the water starts to boil, lower the heat to a simmer. Let it cook for 5 minutes. Then, press the lingonberries with a wooden spoon gently and slowly. Don't mash all the berries.
When the lingonberries are cooked, they will become soft and mashed easily. Once the lingonberries are roughly mashed, add the sugar and salt. Mix well.
The sugar and salt will melt as you mix, and the lingonberry mixture will become glossy and smell wonderful. Cook on a low heat and mix for another 10 more minutes. You can add additional spices for flavors now if you want.
Remove the jam from the heat. Let the lingonberry jam cool down. Your lingonberry jam is ready to be served!
