Ingredients
1 large egg, plus 3 large egg yolks
1/2 cup sugar
1 1/2 teaspoons finely grated lemon zest
1/4 cup plus 2 tablespoons fresh lemon juice (from 2 lemons)
Pinch of salt
2 ounces (4 tablespoons) unsalted butter, cut into pieces
Preparation
Whisk together egg, yolks, sugar, lemon zest and juice, and salt. Bring to a simmer in a medium saucepan over medium heat, whisking constantly. Cook until mixture is thickened, 4 to 5 minutes. Strain through a fine sieve into a bowl. Whisk in butter. Press plastic wrap directly onto surface of lemon curd, and refrigerate until cold, at least 1 hour or up to overnight.
