Japanese Steam Cheese cake

I love Breadtalk Cheese cake but I still want to try it out myself.
So here I go, this round crazy about cheese all the time, making sure that I get more calcium than ever..before.

Water Bath. What exactly is water bath?
Simplying as it is: Bake under a tray of water

My Recipe with complimentary to my dear friends

Ingredients A
130g milk
40g butter
125 g slice cheddar cheese

Ingredient B
20g Plain flour
15g Corn flour

Ingredient C
2 Egg yolk

Ingredient D
3 Egg white + 80g sugar and 1/8tsp cream of tartar

Method:
Cook A over double boiler ( meaning to say place into a small bowl and boil in a big pot) until cheese melt completely.
Remove from heat and add in B. Mix till all blend in nicely.
Add C, mix in well combined
Whip D until stiff and add into the above mixture and mix well

Pour into a prepared greased round 18cm mould
Bake at 150'c in water bath for 50 mins