In a pot, pour in SOY SECRETZ COLLAGEN (leave 1 ladle of soymilk behind), cocoa powder and sugar. On low heat gently stir in until sugar has fully dissolve.
With the remaining 1 ladle of SOY SECRETZ COLLAGEN, mix in with custard powder and egg yolk.
Pour hot mixture over egg yolk mixture and whisk it.
Return entire mixture into the hot pot and cook it on low heat while continuously whisking it until it is slightly thicken up.
In a 9" X 9" square pan, place biscuit at the bottom, and pour in athin layer of chocolate custard then place biscuit again.
Continue by repeating the steps. Once done, place it in chiller for it to set. Cut and ready to serve.