Spiced Watermelon Pickles 3 pounds white portion of watermelon, cubed 5 cups of sugar 2 cups of cider vinegar 1 cup water. 1 Tablespoon whole cloves 1 tablespoon whole allspice 1 Tablespoon stick cinnamon pieces 1 lemon, sliced Let watermelon cubes stand overnight in enough salted water to cover. Drain. Cover with fresh cold water and bring to a boil. Cook over low heat until tender. Drain. Combine sugar ,water, and vinegar. Tie spices and lemon in cheesecloth bag. Add to sugar mixture and stir until mixture boils .Boil 5 minutes. Add watermelon cubes and simmer until transparent (about 15 minutes). Remove spice bag and pack in hot sterilized jars. Back To Canning Recipes.