Cream butter and sugar, then stir in flour, zest, and juice. Chill for 30 min.

Preheat oven to 160°C (320°F).

Drop ½ tsp batter on a baking sheet lined with silicone or parchment. Spread very thinly into small discs (~6 cm).

Bake for 6–8 minutes until golden on the edges.

While warm, drape over a rolling pin or bottle to create a curl. Cool and store in an airtight container.