Fruit leather is a quick way to preserve a surplus of fruit.  I neither use sugar nor Stevia and don’t have a freezer (by choice), so I dry a lot of fruit from the garden and nature . I had too many raspberries in the garden and also bilberries picked the other week in Hurdal. I just boiled and crushed the fruit with a little water and then poured it as a thin layer into an oven tray and dried at about 50C in an oven for a few hours! This is much quicker than drying the whole berries. The leather can then be kept in a cool dry place for several years. Delicious as a goody to offer visitors!
I used an old red raspberry, originally from the old railway station garden in Malvik, an old Norwegian yellow raspberry and “White Russian” (yellow with a white blush):

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