Grandma'S Chocolate Sauce
["1 c. sugar", "4 sq. (oz.) unsweetened chocolate", "1/2 c. half and half or cream", "1 tsp. baking powder", "pinch of salt (optional)", "1/2 stick butter (4 Tbsp.)", "1/2 tsp. vanilla"]
["Melt chocolate in a double boiler.", "Add sugar, cream, butter, salt and vanilla.", "Stir until thickens.", "Add baking powder; stir. (Mixture will bubble.)", "Keep warm.", "Especially good on ice cream!"]
["sugar", "chocolate", "cream", "baking powder", "salt", "butter", "vanilla"]