Golden Light Cheddar Cheesecake

Ingredients:
(A) 70g milk
      2 slices cheddar cheese
      25g butter

(B) 55g superfine flour

(C) 4 egg yolk
      1 whole egg
      ½ tsp vanilla extract (optional)

(D) 4 egg white
      55g castor sugar
      ¼ tsp cream of tartar

Method：
1) Preheat the oven to 150C (upper and lower fire), line the bottom of an 8" round pan with parchment paper and grease the side with butter.

2) Combine (A) in a pot，keep stirring with a hand whisk while cooking over low heat till butter is melted. Remove from heat.

3) Sift in (B) while the milk mixture is still warm, mix well.

4) Set the pot over hot water to keep warm, then add (C), and mix well.

5) Whisk egg white and cream of tartar in (D) till frothy, add sugar in 2 batches, beat till soft peak.

6) Fold in 1/3 of the egg white mixture to egg yolk mixture, mix till just incorporated, then pour the batter to the remaining egg white mixture, mix till just incorporated.

7) Pour the batter into the prepared pan and bake at 150C for about 20 mins with lower fire only and switch to 130C upper and lower fire to bake for another 25 -30 mins till cooked (depends on individual oven, need to adjust the timing and temperature accordingly).

8) Invert the cake immediately after removing from the oven, unmould and cool on wire rack upside down