Japanese Cheese Cake

Ingredients :
7 ounces cream cheese (at room temperature)
1/4 cup whole milk
1/2 cup super fine sugar (caster sugar)
3 eggs, separated
1/4 cup cornstarch (don't use flour)
2 tbs lemon juice
1/2 tsp cream of tartar
21/2 cups boiling water

Directions
Preheat oven to 350 degree F
Spray a 9" cake tin with cooking oil spray
Beat cream cheese with milk to soften
Add hafl of the sugar, egg yolks, cornstarch and lemon juice
beat till smooth
Beat egg white in a separate bowl until foamy
Gradually add remaining sugar and cream of tartar, beating on high speed until soft peak form, about 8 - 10 mins.
Gradually fold beaten eeg white into cream cheese mixture, stirring gently
Pour into cake pan and smooth the surface
Place cake pan into a larger roasting pan and place in lower rack of oven
Pour enough water into the roasting pan to come half way up the side of the cake pan
Bake 35 - 40 mins til a pick inserted in the middle of the center comes out clean