Makes about 1⅓ cups
½ cup fresh lemon juice
2 teaspoons finely grated fresh lemon zest
½ cup sugar
3 large eggs
¾ stick (6 tablespoons) unsalted butter, cut into bits
Step 1 – Whisk together juice, zest, sugar, and eggs in a 2-quart heavy saucepan. Stir in butter and cook over moderately low heat, whisking frequently, until curd is thick enough to hold marks of whisk and first bubble appears on surface, about 6 minutes.
Step 2 – Transfer lemon curd to a bowl and chill, its surface covered with plastic wrap, until cold, at least 1 hour.
Note*Curd can be chilled up to 1 week.