1 Preheat the oven to 180°C bake (350 F). Grease a 20cm spring form cake tin with a removable rim and line the base with baking paper.
2 Pulse the biscuits in a food processor to make crumbs. Add the butter and pulse until combined. Spoon the biscuit mixture into the tin and press evenly to form the base and sides. Refrigerate for at least 30 minutes.
3 Combine the cream cheese and sugar in large bowl with a hand mixer. Add the eggs, one at a time, mixing on low speed after each until just blended. Using a MicroplaneÒ Master Series Zester gently zest the lemon, lime and orange into the mixture (leaving a slice and a pinch of zest from each fruit for decorating). Stir in the remaining ingredients and pour over the biscuit base.
4 Bake for 45 to 50 mins or until centre of the filling is almost set. Run a knife around the rim of the pan to loosen the cake and cool before removing the rim.
5 Refrigerate 4 hours.
6 Mix the cup sour cream, icing sugar and vanilla extract until well blended then carefully spread over the cheesecake.
7 Decorate with the fruit slices and remaining zest.
Recipe courtesy of Microplane