Grapefruit Curd Recipes

Steps:

• Bring grapefruit juice to a boil in a small saucepan over medium-high heat. Reduce heat and simmer until juice is reduced by half, about 5 minutes. Let cool.
• Whisk together eggs, yolks, sugar, grapefruit juice, grapefruit zest, and a pinch of salt in a double boiler or a heatproof bowl set over (not in) a pot of simmering water. Cook, whisking constantly, until thickened, 6 to 7 minutes. Remove from heat, and whisk in butter, a few pieces at a time.
• Pour mixture through a fine sieve into a bowl set in a larger bowl filled with ice water, and stir until cool. Cover surface of curd with plastic wrap, and refrigerate until cold, at least 4 hours and up to 2 days.

Steps:

• Puree the raspberries and grapefruit juice in a blender. Strain the mixture through a fine-mesh sieve into a medium saucepan, pushing it through with a rubber spatula. Rinse the sieve.
• Whisk the sugar, cornstarch, grapefruit zest and salt into the raspberry puree. Whisk in the egg yolks. Cook the mixture over medium heat, whisking constantly, until it¿s thick like pudding, 5 to 7 minutes. Remove from the heat and whisk in the butter a few pieces at a time until incorporated.
• Strain the mixture through the sieve into a small bowl, pushing it through with a rubber spatula. Press plastic wrap directly onto the surface to prevent a skin from forming. Refrigerate until completely set, at least 4 hours and up to 5 days.

Steps:

• In a doubleboiler place the butter in sugar in the top pot over simmering water, stirring until the butter melts and the sugar is dissolved.
• Stir in egg yolks, grapefruit zest and juice, stirring until mixture thickens (20-30 minutes).
• Spoon into a warm, sterilized jar and seal.
• Store in refrigerator for up to 1 month.

Steps:

• Grapefruit Curd:
• Bring grapefruit juice to a simmer in a small saucepan over medium-high heat and cook until reduced to 1/3 cup, 12-14 minutes. Let cool slightly.
• Whisk egg yolks, eggs, sugar, and salt in a medium heatproof bowl to combine. Whisk in grapefruit zest, lemon zest, lemon juice, and reduced grapefruit juice. Set bowl over a large saucepan of simmering water. Cook, whisking almost constantly, until curd is thickened, 6-8 minutes. Remove from heat and whisk in butter, adding a few pieces at a time.
• Transfer to a nonreactive bowl and press a piece of plastic wrap directly onto surface of curd. Chill until set up and very cold, at least 4 hours and up to 12 hours.
• Citrus Sugar:
• Combine sugar and zest in a small bowl. Let sit uncovered 12 hours to dry out. (You can also microwave on high in 15-second intervals, stirring and letting cool slightly between intervals, until dehydrated.)
• Transfer to a blender and blend until powdery. (Or, work zest into sugar with your fingers; just make sure to break up any clumps.)
• Doughnuts:
• Heat milk in a small saucepan or microwave until just warm (you want it to be between 105°F and 110°F). Transfer to the bowl of a stand mixer and scrape in vanilla seeds; reserve pod for another use. Add 1 Tbsp. sugar and sprinkle yeast over. Let sit until yeast starts to foam, about 5 minutes.
• Add egg, egg yolk, honey, lemon zest, salt, and remaining 2 Tbsp. sugar. Mix gently with a wooden spoon until barely combined. Add 2 3/4 cups flour and knead with a dough hook on medium-high speed until dough comes together into a mass that no longer sticks to the sides of bowl and is beginning to climb up the hook, about 5 minutes. (Dough should spring back immediately when pressed.) Reduce speed to medium-low; add butter a couple of pieces at a time, working in completely after each addition.
• Turn out dough onto a work surface and knead with your hands until smooth and springy, about 2 minutes. Transfer to a very lightly oiled bowl, cover with plastic wrap, and let rise in a warm spot until doubled in volume, about 2 hours.
• Turn out dough onto a lightly floured surface and roll out 1/2" thick. Cut out doughnuts with cutter, twisting cutter to release them. Reroll any scraps. Transfer to a very lightly floured parchment paper-lined baking sheet. Cover with a kitchen towel; let sit in a warm spot until slightly puffed and dough springs back lightly when pressed, 40-45 minutes.
• Fit a wide heavy pot with thermometer; pour in oil to come at least 2" up sides. Heat over medium-high until thermometer registers 325°F. Fry 3 or 4 doughnuts at a time, turning halfway through, until deep golden brown, about 6 minutes per batch. Transfer to a wire rack set inside a rimmed baking sheet; let cool.
• Using a paring knife, poke a hole in the top of each doughnut, being careful not to push through to the opposite side. Transfer grapefruit curd to a piping bag or resealable plastic bag (snip off one corner) fitted with a 1/4" round tip. Fill doughnuts with grapefruit curd, then coat generously with citrus sugar.
• Do Ahead
• Citrus sugar can be made 3 days ahead. Store airtight at room temperature.