This cold summer soup balances savory and sweet with ripe, juicy cantaloupe and tomatoes as the base.  Although gazpacho is a traditional Spanish soup, here the addition of cantaloupe and a garnish of prosciutto or jamón serrano makes it more broadly Mediterranean and, for me, taste like Italy.  A staple appetizer on the Italian side of my family was prosciutto-wrapped melon.  As a child, I would wrap the juicy slices and marvel at how my mother invented such a delicious pairing.  I thought she had invented so many of the classics in the way we naturally ascribe inventor status to those we love. Topping the cantaloupe gazpacho with a bit…