A recipe for making caramel sauce – One cup of brown sugar, Four tablespoons of water, One tablespoon of butter. Place in a frying pan and cook until caramelled, then add one and one-half cups of water. Bring to a boil and then add four tablespoons of cornstarch dissolved in five tablespoons of water. Stir until the mixture thickens and cook for five minutes, then add one teaspoon of vanilla and use.