This easy cake makes a great centerpiece for any occasion. Ingredients: 1. 3 large eggs 2. 175g (6 oz) caster sugar 3. 1 1/2 teaspoon baking powder 4. About 1/4 cup boiling water 5. 175g (6 oz) self-raising flour 6. 175g (6 oz) unsalted butter, softened 7