Melt the butter in a skillet and add the onion, garlic, mushrooms, celery, salt and pepper. Cook briefly until vegetables are wilted. Add the chicken broth; bring to a boil and cook for 3 minutes. Remove and let cool.
04Spoon the mixture into a bowl. Add the ham, bread crumbs, eggs, pistachios, sour cream, cumin, nutmeg and parsley. Blend well.05Butter a loaf pan that measures 9 by 5 by 2 1/2 inches. Add the mixture and pack well. Smooth over the top and put in the oven. Bake 40 minutes. Remove from the oven and let stand in a warm place at least 10 minutes before serving. Serve hot with sweet relish or chutney.