In a blender purée the watermelon pieces and strain the purée through a very fine sieve set over a pitcher, discarding the solids. (There should be about /3. Browse and save the best watermelon puree recipes on New York Times Cooking. Classic lemonade meets freshly pureed watermelon in this refreshing summer drink. Looking for recipes with Watermelon Fruit Purée? Monin's culinary & beverage team has you covered!. Browse and save the best watermelon puree recipes on New York Times Cooking. I pureed the watermelon and added 4 chopped Serrano chillies and left overnight in the fridge. I froze a small bag of cubed watermelon that was left over.