Sour Lemon Sauce

(5)
Yield:
4 cups

Ingredients

  • 1 ½ cups sugar

  • 3 tablespoons plus 2 teaspoons cornstarch

  • Pinch of salt

  • 7 tablespoons unsalted butter, cut into small pieces

  • Finely grated zest of 2 lemons, plus 1/2 cup fresh lemon juice

Directions

  1. Bring sugar, cornstarch, salt, and 2 1/2 cups water to a boil in a medium saucepan over high heat, whisking constantly. Cook, continuing to whisk, until mixture thickens, about 5 minutes.

  2. Stir in butter and lemon zest and juice. Cook, whisking, until smooth, 2 to 3 minutes more. Remove from heat and transfer to a bowl to cool completely. Sauce can be refrigerated up to 2 weeks in an airtight container.

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