For a traditonal fool, puree all the berries, then fold into the whipped cream. For the "ombre" version shown in the photo. Reserve some of the puree for the bottom layer. Divide the whipped cream into 3 bowls. Add varying amounts of the remaining puree to two of the bowls of whipped cream, reserving 1 bowl of plain whipped cream. Add a small amount of puree in the bottom of each glass. Top with darkest layer, then middle layer, then whipped cream. Makes 4-6 servings depending on the size of the container.
To finish a classic Fool, you would then carefully fold in all of the remaining strawberry mixture into the whipped cream, or as I did, (mostly for photographic purposes) add the puree to the whipped cream in varying degrees to create an "ombre" effect. (see notes above)