Gratin of Leek and Ham Rolls

• 12 medium leeks (about 2 pounds)
• 1 pound small zucchini, coarsely grated or passed through medium blade of

Trim the tough extremities from the leek greens, slit several times from the white section, piercing at point just below the formation of the leaves up through the leaves, soak, cut white and light-green sections into lengths corresponding to the size of the ham slices, tie into a bundle (the green tops will serve for soups or bouquets garnis) and cook in lightly boiling salted water until bare