Ingredients
Method
- Combine biscuit crumbs, melted butter, and sugar. Press firmly into base of deep 23cm springform tin. Refrigerate 30 minutes.
- Preheat oven to 170°C / 150°C fan / Gas 3. Wrap tin in 2 layers of heavy foil. Place large roasting tin in oven. Boil kettle.
- Beat cream cheese alone 2 minutes until smooth. Add sugar — beat 2 minutes. Add eggs and yolks one at a time — beat briefly after each. Add soured cream, vanilla, lemon zest, flour, and salt — beat until just smooth.
- Pour over chilled base. Tap tin twice. Place in hot roasting tin. Pour boiling water 3cm up the sides.
- Bake 55–65 minutes until set at edges with a distinct 10cm wobble in the centre. If adding topping: at 55 minutes spread soured cream mixture over surface — return 10 minutes.
- Turn off oven. Door ajar — cool 1 hour inside. Remove and cool at room temperature 2 hours. Refrigerate 6 hours minimum — overnight ideal. Run palette knife around edge — release springform.
Notes
Every ingredient at room temperature — cold ingredients give lumps and uneven baking.
Do not over-beat the eggs — excess air causes the cheesecake to rise and crack.
The water bath is not optional — gives the gentle heat that produces a silky, uncracked result.
The central wobble is correct — it sets completely during cooling.
Cool gradually with the oven door ajar — prevents the dramatic temperature change that causes cracking.
Overnight refrigeration gives the cleanest slices and the best texture.
