2 1/2 c. presweetened powdered lemonade mix
1 c. plus 2 tbsp. cornstarch
1 1/4 c. sugar, more for sweeter flavor
1 tsp. salt

In a medium bowl, combine lemonade mix, cornstarch, sugar and salt. Mix well. Put in a 1 quart airtight container. Label. Store in a cool, dry place. Use within 6 to 8 months. Makes 4 1/4 cups of filling mix.