1. Prepare the Glass:

   - If you prefer a salted rim, rub a lime wedge around the edge of your glass and dip it into salt.

2. Make the Melon Puree

   - In a blender, combine the diced watermelon and blend until smooth. Strain through a fine mesh sieve if you prefer a smoother texture.

3. Mix the Drink:

   - In a shaker or pitcher, combine the watermelon puree, fresh lime juice, and agave syrup or honey. Stir well to mix.

4. Add Sparkling Water:

   - Gently stir in the sparkling water or preferred soda to add some fizz.

5. Serve:

   - Fill the prepared glass with ice cubes and pour the watermelon mixture over the ice.

6. Garnish:

   - Garnish with lime wedges and melon slices, if desired.

7. Enjoy!

   - Sip your refreshing Melon Margarita Mocktail and enjoy the taste of summer!