Ingredients Jump to Instructions ↓

  1. 1 tablespoon(s) butter 3/4 cup(s) nonfat buttermilk (see Tip) , divided 1 tablespoon(s) cornstarch 1/2 teaspoon(s) salt pinch(s) cayenne pepper 1 large egg , lightly beaten 1 tablespoon(s) lemon juice

Instructions Jump to Ingredients ↑

  1. Melt butter in a small saucepan over low heat. Cook, swirling the pan, until the butter turns golden, 30 to 60 seconds. Pour into a small bowl and set aside. Whisk 1/4 cup buttermilk, cornstarch, salt and cayenne in a heavy medium saucepan until smooth. Whisk in egg along with the remaining 1/2 cup buttermilk. Set the pan over medium-low heat and cook the sauce, whisking constantly, until it comes to a simmer. Cook, whisking, for 15 seconds. Remove from heat and whisk in lemon juice and the reserved butter. Serve hot or warm. Classic Variations To make Sauce Moutarde, add 2 teaspoons Dijon mustard. For Sauce Maltaise, use 1 1/2 tablespoons orange juice in place of the lemon juice.


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