Greek Arni Kapama aka Lamb Stew

2 1/2 lbs. stewing lamb, cut in cubes
2 tsp. salt
1 1/2 lemon
1/4 tsp. pepper
1/2 cup butter
small piece cinnamon (optional)
2 lbs. chopped tomatoes
1 Tbsp. sugar (optional)

Sprinkle lemon juice over meat and leave for 1 hour. Heat butter in a frying pan and brown meat. Transfer to large saucepan. Put tomatoes in frying pan. Add salt, peeper, cinnamon and sugar. Boil for 5 minutes and add to meat. Simmer covered for 2 hours. Serve with potatoes, rice, macaroni or spaghetti. Serves 4 to 5.