2In a large, wide pot, layer the pitted sour cherries and granulated sugar. Start with a layer of sour cherries, then a layer of granulated sugar, repeating until all ingredients are used. Cover the pot and let it rest at room temperature for at least 12 hours, or preferably overnight, to allow the sour cherries to release their natural juices.
3After resting, add the water to the pot. Place the pot over medium heat and bring the mixture to a gentle boil, stirring occasionally to help dissolve the granulated sugar.