"A unique, good tasting, somewhat exotic dessert. Called "Gelo di Melone" if you use all the ingredients, a summer treat in Sicily. In making this the first time, I imagined soaking sliced sponge layers to make a true watermelon cake; or using this instead of raspberry jam in a trifle. This recipe is paraphrased (with apologies) from Nick Malgieri's book: Great Italian Desserts...."