Combine sugar, cornstarch, salt, grape juice, and water in a medium sauce pan, stirring well. Bring mixture to a boil over medium heat, and boil 1 minute, stirring constantly.
Remove from heat; add lemon juice and butter, stirring until well blended.
Oxmoor House Homestyle Recipes
I’d been looking for a great secret recipe for something and this has to be it! Now I just have to learn the low-temp barely baked pie crust secret and I’ll have it!