Watermelon and cantaloupe salad with spearmint vinaigrette

Recipe here: http://www.foodnetwork.com/recipes/giada-de-laurentiis/watermelon-and-cantaloupe-salad-with-mint-vinaigrette-recipe.html  We used two lemons to make the ¼ cup of lemon juice and added lemon zest. (Sept. 2015)