500 gr green seedless grapes, washed, drained, stems removed, choose the smallest ones:)
1/2 of a red apple*, peeled, thinly grated
1 3/4 cup sugar
1 cup water
1 tsp vanilla
2 tbsp pine nuts, lightly roasted
1/2 of lemon juice
Melt the sugar, vanilla and water in a medium sized pot. Add the grapes and apple, and cook for about 45-50 minutes. Put a drop of jam on a cold plate, if it is not runny and stays, then it's done. Add the lemon juice and pine nuts, stir. After 2 minutes turn the heat off. Place into a clean jar, wait until it cools down, then close the lid tightly. Store in a dark and cool place.
This delicious jam belongs to the Aegean Region, like fig and mastic jam....
* Red apple gives the right consistency to grape jam, otherwise it gets runny.