Lemon Curd
["1 c. sugar", "6 egg yolks, beaten and strained", "1/2 c. fresh lemon juice, strained", "8 Tbsp. (1 stick) unsalted butter, cut up", "grated zest of 1 lemon"]
["Place sugar, egg yolks and lemon juice in a medium saucepan over low heat.", "Whisk to combine, then switch to a wooden spoon.", "Cook slowly, stirring constantly, until mixture thickens and coats back of spoon.", "Cook a few minutes more but do not allow to boil. Remove from heat, stir in butter and zest and let cool.", "Cover with plastic wrap and chill until ready to use.", "Makes about 3 cups. This is a tangy topping for gingerbread, scones and crumpets."]
["sugar", "egg yolks", "lemon juice", "unsalted butter", "lemon"]