From Kate Jones, 2009
1/2 pound powdered sugar (16 oz.)
1/4 c. plus 2 T milk
1/4 c. plus 2 T light corn syrup
1 t. of extract (vanilla, almond, etc.)
With a whisk, combine sugar and milk until smooth (no lumps). Then stir in corn syrup and extract.
To thicken for piping, add more powdered sugar.
For sugar cookies.