Cooking Steps

1. 

   Step1:Stir the yolk with sugar until the color is lighter and the volume is large

2. 

   Step2:Sift in low flour corn starch and mix evenl

3. 

   Step3:Heat the milk until there are small bubbles on the edge of the pot, pour in one third of the milk until the yolk paste is mixed, then pour all the mixed yolk paste into the milk pot, continue to heat and stir until it is thick

4. 

   Step4:Keep off the fire, add butter, stir well and put it into a cold water basin to cool down and bottle for standb