this is a fantastic recipe--refreshing, light. i have made it many times over the years, and it always get raves. am going to make it tomorrow again for a 4th of july bbq--and expect to get good reviews again. the recipe has a good balance of flavors and textures. the tarragon pairs so well with the watermelon. yum! oh--i often don't follow recipes to the "t", but this is one that i think benefits from good measurements, etc, and doesn't need any tinkering.