
Few frozen desserts feel as effortlessly refreshing as a granita, and this watermelon version is the kind of thing that makes a hot afternoon genuinely exciting. The base is bright, juicy watermelon blended smooth and strained, then lifted with a honey-mint syrup and a squeeze of fresh lime — simple, clean flavors that taste like summer at its peak. For anyone managing a nickel sensitivity, this recipe is a natural fit because it leans entirely on fresh fruit, honey, water, and herbs rather than grains, legumes, nuts, or seeds that tend to be higher in nickel. No specialty swaps needed here — just real ingredients that happen to work beautifully together. The technique is low-effort but deeply satisfying: you freeze the mixture in a baking dish and scrape it with a fork every half hour or so, building up those signature loose, feathery ice crystals that make granita so much more interesting than a standard sorbet. The result is light, faintly floral, and just tart enough to keep you going back for another spoonful. Serve it in chilled glasses with a sprig of fresh mint and it looks far more impressive than the effort involved.
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Combine the honey and water in a small saucepan over medium heat, stirring until the honey fully dissolves, about 2 minutes. Remove from heat and add the mint leaves. Let steep for 5 minutes, then strain out and discard the mint leaves.
Working in batches if needed, blend the watermelon cubes in a blender until completely smooth, about 30 seconds.
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