Jam melons crusts

Ingredients:

1 kg melon (crust)

1.2 kg sugar

2-3 g citric acid

Vanilla - to taste

Cut off the crusts from the pulp of melon or watermelon cut into cubes 1-2cm, remove seeds from watermelon. Sprinkle with sugar and pulp 2 hours put in a cool place, and then boil in sugar syrup. Cook 3 doses (up to boiling), delayed 8-10 hours. Before the last cooking add citric acid and vanillin taste.