01 -
Whisk flour, powdered sugar, and salt in a bowl. Cut in cold butter until the mixture looks sandy with a few pea-size pieces. Mix in the egg yolk and 1 tablespoon ice water, adding a little more only if needed to form a dough.
02 -
Roll the dough on a lightly floured surface and cut rounds to fit 8 mini tart pans. Press into the pans, trim the edges, prick the bases with a fork, and chill for 30 minutes.
03 -
Heat the oven to 350°F (175°C). Bake the chilled shells for 15-18 minutes, until lightly golden and dry to the touch. Cool completely.
04 -
In a saucepan, whisk lemon juice, zest, sugar, eggs, egg yolks, butter, and salt. Cook over medium-low heat, stirring constantly, until thick enough to coat a spoon, about 6-8 minutes. Strain into a bowl.
05 -
Spoon the warm curd into the cooled shells. Smooth the tops and chill for at least 30 minutes, until set.
06 -
Set egg whites and sugar in a heatproof bowl over simmering water. Whisk until the sugar dissolves and the mixture reaches 160°F (71°C). Remove from heat and beat to stiff glossy peaks, then beat in vanilla and lilac gel coloring.
07 -
Pipe or spoon the meringue onto the chilled tarts. Toast lightly with a kitchen torch, garnish if desired, and serve the same day.