Trim all the fat and tendons from the chicken and cut into cubes
Put in the food processor, remove all white stringy pieces
In a large mixing bowl, soak bread crumbs in cream.
Add the pureed chicken, egg white, scallions, sweet potato, peas, garlic, ham, pistachio nuts, tarragon, nutmeg and salt and pepper.
Mix until everything is combined
Lay out a piece of extra-wide strong foil about 18 inch long.
Spoon the chicken in and make a log about 12 inches long.
Bring the together the long side of the foil and fold over the securely enclosed
Transfer into a baking dish and bake for 1 ½ hours in the oven at 375º degrees.
Let cool and slice the log