First of all Add deseeded and cubed watermelon along with salt and lime juice to a high-speed blender jar and blend for 20 seconds or until smooth and frothy.

Now your watermelon was with lot of pulp or with seeds, then pass the juice through fine mesh strainer.

Now it used watermelon with almost no seeds, I had skipped this process.

Add few ice cubes and fresh mint in serving glasses, pour the prepared juice and serve and as you like it