Sponge cake (made with oil)

• 5 oz (150 g) self-raising flour
• 1 level teaspoon baking powder

A sponge cake made with oil tends to have a more open and crumbly texture. Heat the oven to 375°F (190°C) or gas no. 5. Grease an 8 inch (20 cm) layer cake tin. Dust the base and sides with equal parts flo