Lemon Curd

Directions

1. 1
   Finely grate enough zest from lemons to measure 2 teaspoons and squeeze enough juice to measure 1/2 cup.
2. 2
   Whisk together zest, juice, sugar, and eggs in a metal bowl and add butter.
3. 3
   Set bowl over a saucepan of simmering water and cook mixture, whisking occasionally, until thickened and smooth, about 20 minutes.
4. 4
   Serve warm or chilled with store-bought angel food cake or biscuits.