Adu Du stole Tok Aba's Debt Book (mistaken as the Secret Recipe Book) so he could know how Tok Aba makes his delicious Cocoa.
"Witness now everyone the secret recipe of Granddad!
3 Ringgit and 50 Cents, Gopal
7 Ringgit and 20 Cents, Gopal
5 Ringgit and 90 Cents,
According to footnote, haven't payed for three months!