64-inch Pâte Sucrée Tart Shells, baked and cooled (See Tip 1)
¾cup(6 ounces, 180 ml) Freshly squeezed lemon juice (about 4 to 5 lemons) (See Tip 2)
1tablespoonfinely grated lemon zest
¾cup(5.25 ounces, 150 grams) granulated sugar
4large eggs
4large egg yolks
12tablespoons(6 ounces, 170 grams) European-style unsalted butter, cut into ½-inch cubes (See Tip 3)
Instructions
Add the sugar and lemon zest directly to a medium All-Clad saucier. Using your fingertips, rub the zest into the sugar for about 1 minute until the sugar becomes fragrant and slightly damp. This helps release the essential oils from the zest, resulting in a brighter lemon flavor.
Add the lemon juice, butter, eggs, and egg yolks to the saucier over medium-low to low heat. Whisk continuously until the butter melts and the mixture thickens (10 to 20 minutes). Do not allow the mixture to boil
Immediately pour the curd through a fine-mesh strainer into a large Pyrex measuring cup with a pouring spout. Using a flexible silicone spoon or spatula, gently press the curd through the strainer. Discard any remaining zest or coagulated egg proteins.
Place each baked tart shell on a digital kitchen scale. Tare the scale. Pour the curd into each shell until it reaches 90 grams.
Refrigerate the filled tarts, uncovered, until completely set, about 3 to 4 hours.