Cream the margarine using an electric beater till shiny. Pour the sugar powder in batches into the creamed margarine and cream further to disperse the sugar uniformly.

Sieve together maida, custard powder, baking powder and soda. Collect the whole creamed mixture using scrapers and pour the entire maida mixture over it. Fold the maida mixture with fingers but do not knead.

Take a small baking tray. Make small balls (18g) from the dough and place them on the tray. Press the balls lightly with a fork coated with dry maida.

Pre-heat Air Fryer for 5 minutes. Keep the baking tray in the fry basket and close it properly. Keep Air Fryer at 150°C for 25–30 minutes till golden. Remove from the fryer and cool on the same tray for 25–30 minutes. Remove from the tray and store in an airtight container.