One of the ways I stretch chicken, turkey and egg salad, is that I add a medium size baked potato in with it. I simply bake one potato in the microwave for about 10 minutes. After its done baking, run it under water and you can peal the skin off with your hands. mash it up a little bit then put it in with the meat and start mixing your salad using your favorite goodies. Adding a medium potato just about doubles the mass of the salad and I have yet to get a complaint.