I think this is my favorite way to drink watermelon. If it’s been a long day, you can add some vodka or tequila. If you are feeling fancy, add in some sparkling whatever (I bet club soda, ginger ale and champagne would all work.) On it’s own, it’s like a thick agua fresca.
Just remove the seeds and blend! If I put the watermelon into the fridge before blending, then I don’t think it needs ice, but if it starts at room temperature I definitely drop in a couple of cubes.