STEP 1 To gift, sift icing sugar and spoon into a jar. Top with plain flour, pistachio kernels and cornflour. Add tag.

STEP 2 To make shortbread stars, preheat oven to 160°C. Line a large oven tray with baking paper. Combine butter, zest, juice and vanilla in the bowl of an electric mixer and beat on high, using paddle attachment, until pale and fluffy. Add jar of ingredients and stir until well combined.

STEP 3 Turn out dough onto a lightly floured surface and knead gently until smooth. Roll out dough between 2 sheets of baking paper until 4mm thick. Using a 6cm star cutter, cut 24 shapes from dough, re-rolling as necessary. Arrange on prepared tray.  Sprinkle with additional pistachio kernels. Bake for 15 minutes or until light golden and firm. Transfer to a wire rack to cool. When cold, dust with extra Chelsea Icing Sugar and serve.