• 100g coarse oatmeal
  • 100g medium oatmeal
  • 100g fine oatmeal
  • ¼ teaspoon baking powder
  • ½ teaspoon salt
  • 25g butter
  • 35ml hot water

Preheat oven to 150°C. Mix the oatmeal and put 250 grams, the baking powder, and salt into a bowl, and stir in the melted butter. Slowly add the hot water to make a smooth, firm paste.

Form into a ball and roll the mixture on a table sprinkled with 25 grams of the remaining oatmeal. Ensure the mixture is completely covered with oats and roll out into a circle about ½ centimetre thick. Cut into eight wedges.

Using a fish slice, transfer the wedges onto a baking sheet covered with the remaining oatmeal. Bake in the centre of a fairly hot oven for about 30 minutes without allowing to brown.