Place the cubed watermelon and ice cubes into the pitcher of a high-powered blender.
Add Flavoring Agents:
Pour the fresh lime juice over the watermelon and ice. Add the granulated sugar and a small pinch of salt, if using, to enhance the overall flavor.
Blend Until Smooth:
Secure the lid on the blender and process the ingredients on high speed until the mixture is fully smooth and achieves a thick, slushie-like consistency.
Serve Immediately:
Pour the Watermelon Slushie into chilled glasses and serve at once for optimal texture and refreshment.
Notes
This Watermelon Slushie recipe is naturally gluten-free, as it contains only fresh fruit, ice, and basic flavorings. To ensure complete gluten safety, verify that the sugar and any additional ingredients are processed in a gluten-free facility.