A wonderfully elegant dessert wine, Sauternes has a mellow sweetness that brings out the citrus flavors of this dessert.
Add flour, butter, and confectioner’s sugar to a food processor and pulse briefly. Separate a part of the eggs and add yolk as well as cold water to the food processor. Pulse until dough comes together. Wrap in plastic wrap and let rest in the refrigerator for approx. 15 min.
Grease a tart pan with some butter. Thinly roll out dough and place in tart pan. Trim edges if needed. Return to refrigerator and let rest for a further approx. 30 min.
Preheat oven to 200°C/400°F. Carefully place a sheet of parchment paper on the crust and fill with pie weights. Blind bake the crust for 20 – 25 min. Transfer out of oven, remove pie weights, and set aside to cool. Reduce oven temperature to 180°C/350°F.
Mix remaining eggs and sugar in a stand mixer until well combined. Add mascarpone and whipping cream. Add lemon zest. Juice lemons and add some of the juice.
Add filling to crust and bake in a preheated oven at 180°C/350°F for approx. 30 – 35 min. until just set. Remove from oven and let cool.
Serve dusted with confectioner’s sugar.