Apple Juice Syrup

1 cup granulated sugar
2 tablespoons cornstarch
1/4 teaspoon cinnamon
1/4 teaspoon nutmeg
2 cups apple juice
2 tablespoons lemon juice
1/2 cup butter

Mix sugar, cornstarch, cinnamon and nutmeg in a saucepan. Stir in apple juice and lemon juice. Heat to boiling, stirring constantly. Boil for one minute. Blend in butter. Serve warm over apple pancakes. Top with sour cream.