Frozen grapes are one of my favorite healthy snacks, especially during warm weather. The addition of citric acid in this recipe not only enhances the tartness of the grapes but also acts as a natural preservative, helping maintain the vibrant flavor while frozen. If you're new to using citric acid, it can easily be purchased online or at local stores, often found in the canning or baking sections. I recommend using monk fruit sweetener if you’re aiming to keep this snack low in calories and sugar while still enjoying a subtle sweetness. The balance between the natural tartness of lemon juice and the sweetness from the monk fruit sweetener and sugar makes these frozen grapes irresistible and satisfying. When preparing this treat, make sure to spread the coated grapes evenly on the baking sheet to prevent them from freezing into a clump—that way, you can enjoy them individually as a refreshing bite-sized snack. These are perfect to keep in your freezer for when you need a quick, healthy dessert or a cool snack after a workout. If you want to experiment, adding a sprinkle of chili powder or a pinch of salt before freezing can create an exciting sweet-and-spicy flavor profile. Also, using different grape varieties, like red or black grapes, can bring subtle changes to the taste and color. Overall, this recipe requires minimal ingredients and effort but yields a delightful snack that’s both delicious and nutritious. Give it a try and enjoy your own homemade fruit riot sour frozen grapes!