Preparation time 20 minutes. Cooking time 20 minutes.
1. Preheat oven to moderate. Grease and flour two deep 22cm- round cake pans.
2. Beat eggs and caster sugar in small bowl with electric mixer about 5 minutes or until thick and creamy; transfer to large bowl.
3. Sift dry ingredients twice onto paper, then sift over egg mixture; gently fold ingredients together.
4. Divide mixture evenly between prepared pans; uncovered, in moderate oven about 20 minutes. Turn sponges immediately onto baking paper lined wire rack; turn top-side up to cool.
5. Beat cream, icing sugar and extract in small bowl with electric mixer until firm peaks form. Place one sponge on serving plate; spread first with jam, then with cream mixture. Top with strawberry slices, then with remaining sponge. Dust with sifted extra icing sugar.
Serves 10.