Berry-topped Pavlova: 150ml egg white (whites of approximately 4 eggs);   1 cup (220g; or ~8oz.) caster (superfine) sugar;   2 tablespoons (~1.5 fluid oz.) corn flour; (corn starch), sifted;   2 teaspoons (1/3 fluid oz.) white vinegar. Enough berries to cover. 300 ml (~10 fluid oz.) cream, whipped. Other fruit often used: passionfruit, kiwi fruit, mango