Place bacon in a large, deep skillet. Cook over medium high heat until evenly brown. Drain, crumble and set aside.
In a medium bowl, whisk together the sugar, cornstarch and salt, and slowly pour in water and vinegar, whisking constantly.
In a medium skillet, add the crumbled bacon and pour the vinegar mixture over it.Cook over medium heat, stirring constantly, until mixture thickens.
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