Ligurian Fava Bean and Lettuce Soup

When I was discussing fava with Danilo Solari in Portofino (see Marò), another fragrant specialty of the cooking of Liguria came up, this soup with fresh fava and Romaine lettuce. It is a textbook example of the Riviera’s culinary style, combining gentleness and boldness, gentle in the sweetness of the lettuce and the fresh fava beans, bold in the fragrance of the marjoram alighting on the soup just as you are about to bring it to t