Prepare all the fruits and a small watermelon. My watermelon weighed about 4 pounds. Wash all the berries and watermelon.
Cut the watermelon in half. Cut the strawberries into bite-sized pieces.
Take the flesh out of the watermelon with a spoon. Store the watermelon pieces in the fridge.
Add the milk, sugar, salt, and 1/2 cup of strawberry pieces to the watermelon bowl. Blend everything using a stick blender. Blend until smooth.
Add the rest of the berries to the bowl. Cover it and chill in the fridge for 2-3 hours.
Take it out and serve it with the watermelon pieces. Garnish it with mint sprigs or ice cubes. Serve it in a bowl. Enjoy!