Peanut Brittle
["1 1/2 tsp. baking powder", "1 tsp. water", "1 tsp. vanilla", "1 1/2 c. sugar", "1 c. water", "1 c. light corn syrup", "3 Tbsp. margarine or butter", "1 lb. shelled, unroasted peanuts"]
["Butter 2 cookie sheets, 15 1/2 x 12-inches and keep warm.", "Mix baking soda, 1 teaspoon water and vanilla.", "Mix sugar, 1 cup water and the corn syrup in a 3-quart saucepan.", "Cook over medium heat, stirring occasionally, to 240\u00b0 on candy thermometer or until small amount of mixture dropped into very cold water forms a soft ball that flattens when removed from water.", "Stir in margarine and peanuts.", "Cook, stirring constantly, to 300\u00b0 or until small amount of mixture dropped into very cold water separates into hard, brittle threads.", "Watch carefully so mixture does not burn. Immediately remove from heat.", "Quickly stir in baking soda mixture until light and foamy.", "Pour half of the candy mixture onto each cookie sheet and quickly spread about 1/4-inch thick.", "Cool. Break into pieces."]
["baking powder", "water", "vanilla", "sugar", "water", "light corn syrup", "margarine", "peanuts"]