Chef John's Lighter Lemon Curd

Step 1
Fill a saucepan with water several inches deep and place over medium heat; bring to a boil, then reduce to a simmer.

Step 2
Place eggs into a metal mixing bowl; add sugar and lemon juice. Place the bowl over the saucepan with simmering water and whisk continuously until mixture foams and becomes thick, hot, and smooth, 8 to 10 minutes.

Step 3
Remove from heat; whisk in lemon zest and unsalted butter. Continue whisking until butter melts and incorporates into lemon curd.

Step 4
Press plastic wrap onto the curd's surface to prevent skin from forming. Refrigerate until chilled and set, about 1 hour. Stir before serving.