1. Combine flour, baking powder and sugar in an electric mixer. Add in the rest of ingredients, mix to forms a soft dough over low speed.
2. With flour palms, roll the dough on floured surface to form long shape. Place on a baking tray. Bake in oven at 200℃ for 15 minutes or until light yellow in colour. Remove and leave to cool completely.
3. Slice the half baked biscuit into thinly. Bake in oven at 140℃ for another 20 minutes until crispy. When cool, keep in airtight container.