I arranged  Yummy's recipe of vert-manger!!

It makes one blanc-manger in a 200cc ramekin (1 serving)
■Ingredients
2 Tbs. of sugar
2 Tbs. of potato starch (katakuri-ko)
1 tsp. of cocoa
150 ml of milk

■How to
①　Mix sugar, potato starch, cocoa in a pot with a beater.
②　Pour in milk (first only 20cc) and mix well with a beater.  Add the rest.
③　Cook over medium heat, stirring constantly with a wooden spoon.  
　　 The mixture hardens suddenly and becomes very sticky and heavy. 
　　 It becomes somewhat translucent and uniform in texture.
④　Turn down the heat (Low) and keep cooking for another minute,
　　 stirring constantly! (It sticks to the bottom of the pot and burn!!)
 　　Take off the heat when the mixture becomes shiny. 
⑤　Wet a ramekin and pour in the mixture.  Push in.
⑥　Cool with the bottom of the ramekin in a bowl of icy water,
　　 then cool in the fridge.　Unmold on a plate and serve with whipped cream. 

★　I substituted corn starch for potato starch, but it did not turn out
      right.  In order to get the sticky texture, you really have to use
      potato starch.