¾ packet of corn starch
110g butter
¾ cup sugar
1 tsp baking powder
5 egg yolks
3-4 drops of vanilla essence

Beat butter and sugar until smooth and creamy. Add egg yolks, one at a time, beating all the while.

Mix then sift corn flour with baking powder over the mixture and knead for some 20 minutes.

Divide into 5 portions and mould into cookie shapes or squeeze using a large icing bag into long fancy shapes. Cut into pieces and put on a greased tray.

Bake in a slow oven for 20-30 minutes. (Some say the secret is to put into a cold oven, not a preheated one.)