MARBLEIZED LEMON TART WITH SAGE

Marbleized Lemon Tart with Sage image

Yield makes one 9-inch tart

Number Of Ingredients 19

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Ingredients

For the Crust
2 1/4 cups all-purpose flour, plus more for dusting
3/4 cup coarse yellow cornmeal, preferably stone-ground
3 tablespoons sugar
1 tablespoon plus 1 teaspoon finely chopped fresh sage leaves
1 1/2 teaspoons salt
1/2 teaspoon finely grated lemon zest
3/4 cup (1 1/2 sticks) cold unsalted butter, cut into small pieces
3 large egg yolks
1/4 cup plus 1 tablespoon ice water
For the Filling
1/4 teaspoon unflavored powdered gelatin
1 tablespoon water
6 large egg yolks
1 cup sugar
1/4 teaspoon salt
1/2 cup fresh lemon juice
1/2 cup (1 stick) unsalted butter, cut into tablespoons
3 tablespoons crème fraîche

Steps:

Make the crust: Pulse flour, cornmeal, sugar, sage, salt, and zest in a food processor until combined. Add butter; pulse just until mixture resembles coarse meal. Whisk together egg yolks and ice water in a small bowl. Drizzle egg mixture evenly over flour mixture, and pulse just until dough holds together. Divide dough in half, and shape each portion into a disk. Wrap in plastic, and refrigerate 1 hour or up to 2 days.
On a lightly floured surface, roll out 1 disk of dough to an 11-inch round. Gently press into a 9-inch tart pan with a removable bottom; trim excess dough flush with rim. Refrigerate or freeze until firm, about 30 minutes. Reserve remaining dough for another use (it can be frozen up to 3 months; thaw in refrigerator before using).
Preheat oven to 375°F. Pierce bottom of shell all over with a fork. Bake until golden brown, about 25 minutes. Let cool.
Make the filling: In a small bowl, sprinkle gelatin over the water, and let stand until softened, about 5 minutes. Prepare an ice-water bath.
Whisk together egg yolks, sugar, and salt in a large heatproof bowl. Gradually whisk in lemon juice. Place bowl over (not in) a pan of simmering water, and whisk constantly until mixture has thickened. Whisk in softened gelatin. Remove from heat, and whisk in butter, a few pieces at a time, until smooth. Let cool, stirring occasionally. Place bowl with yolk mixture over ice bath, and stir until slightly thickened, about 2 minutes.
Pour curd into crust; smooth top. Dollop small spoonfuls of crème fraîche all over top. Using a wooden skewer or the tip of a knife, swirl crème fraîche into curd to create a marbleized pattern. Refrigerate until set, 2 hours, or, wrapped in plastic, up to 1 day.