INGREDIENTS

• 1 tablespoon cornstarch
• 2 teaspoons sugar
• 1 teaspoon dry mustard
• 1/2 teaspoon salt
• 1 cup water
• 1 tablespoon butter
• 1/4 cup cider vinegar
• 1 teaspoon grated prepared horseradish
• 2egg yolks, beaten

Steps

1. Combine cornstarch, sugar, mustard and salt in quart pan.
2. Add water.
3. Stir over low heat until mixture thickens and boils.Remove from heat; add butter, vinegar, and horseradish.
4. Beat a little of hot mixture into egg yolks; then add yolk mixture into pan.
5. Cook slowly, stirring until sauce thickens slightly.Serve.