Difficulty: 2/5
As a professional chef with years of experience crafting citrus desserts, I recommend starting with the cream. Thoroughly wash one grapefruit and pat dry. Finely grate half the zest, avoiding the bitter white pith, and cut into thin strips. Blanch the strips in boiling water for 1 minute, drain, and dry well.
Melt the butter in a saucepan with the zest, then set aside. In a bowl, whisk together the powdered sugar, vanilla sugar, and eggs. Stir in the juice from two grapefruits and the butter-zest mixture. Return to the saucepan and cook over low heat, stirring constantly, until it thickens to a pastry cream consistency. Cool and refrigerate for 1 hour.
Preheat the oven to 180°C (th. 6). Unroll the dough into a pie pan, prick the base with a fork, and bake for 15 minutes until golden. Cool completely.
Peel the remaining two grapefruits, removing all membranes, and gently separate into supremes to keep them intact.
Spread the chilled cream over the cooled tart base. Arrange the grapefruit supremes in a star pattern on top and serve immediately for the freshest flavor.
Pro Tip for Elegance: Before baking, cut leaf shapes from extra shortcrust pastry. Brush the pie edges with egg yolk beaten with water, attach the leaves, brush them too, and bake for a polished presentation.
Culinary Ideas from Chef Hubert
