Salmon Stew
["6 to 8 potatoes, peeled and diced", "1 large onion, peeled and chopped", "1 (14 1/2 oz.) can tomatoes", "1 large can salmon (skin and bones removed)", "salt and pepper to taste", "onion salt (optional)", "1 Tbsp. butter (optional)"]
["Put potatoes and onion in a large saucepan and cover with water.", "Boil until potatoes are soft.", "Add remaining ingredients and simmer for 30 minutes.", "Serves 4."]
["potatoes", "onion", "tomatoes", "salmon", "salt", "onion salt", "butter"]