This recipe goes with Potato-and-Gruyère Casserole
Southern Living NOVEMBER 2005
Melt butter in a heavy saucepan over low heat; whisk in flour until smooth. Cook, whisking constantly, 1 minute. Gradually whisk in milk and wine; cook over medium heat, whisking constantly, 18 to 20 minutes or until mixture is thickened and bubbly. Stir in salt.
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