First grease your cake pan. Sieve all dry ingredient (flour, baking powder, preservative and powder milk)

Cream the butter and sugar untill its pale in colour and fluffy. In a seprate bowl break ur egg

Start adding it one at a time and mix untill you add all. Then you start to add the flour bit by bit and fold not turning add your vanilla exract untill everything is well mix. Pour ur batter in the preped pan and bake for one hour. I baked mine using my karosine stove