Meringue
["4 egg whites", "3 Tbsp. water", "pinch of salt", "1/2 c. sugar", "1/2 tsp. vanilla", "1/2 tsp. baking powder"]
["Add water and salt to egg white and beat until stiff but not dry.", "Gradually add sugar and vanilla.", "Beat until well mixed. Add baking powder and beat until smooth and fluffy.", "Cover pie and brown lightly in a moderate oven."]
["egg whites", "water", "salt", "sugar", "vanilla", "baking powder"]