Lime meringue tartlets

Pastry

• 1 egg
• 50 g caster sugar
• 120 g unsalted butter, cut into pieces
• 1 lime, zest only (no white pith)
• 220 g plain flour

Lime curd

• 120 g caster sugar
• 3 fresh limes, juice only (approx. 60 g)
• 1 tsp cornflour
• 60 g unsalted butter, cut into pieces
• 3 egg yolks

Meringue

• 2 egg whites, room temperature
• ¼ tsp cream of tartar
• ½ tsp vanilla bean paste
• 100 g icing sugar (see Tips)