Make this recipe a recipe that people in that category can eat. categories: ['low_fat'], recipe: stir the cornflour into the water. combine all ingredients in a small saucepan over a medium heat. stir the mixture constantly and bring it to the boil. continue to stir until the sauce thickens. use immediately or store in an airtight container in the refrigerator. note: for a thicker sauce add more cornflour eg to use as a dipping sauce.

Target recipe: drain pineapple, reserving juice from pineapple. in a medium saucepan, combine sugar, can of tomatoes, onion, soy sauce, ginger and pineapple; simmer for 20 minutes. in a small bowl, combine cornstarch and reserved pineapple juice; stir till smooth. add to the cooked pineapple mixture when mixture is done cooking. bring to a boil and cook for about 2 minutes or till slightly thickened,remove from heat and cool. refrigerate till cold.