I'm still puzzled as to what it is. Tung meen fun is wheat starch. It is flour that is left after the protein is removed or taken out. It is a non-gluten flour. Sundry shop owners know this flour by the name tung meen fun.
Drinking chocolate is actually cocoa powder.
It can come under brand names such as Cadbury's cocoa, Van Houten's cocoa or Tesco's cocoa. Here's a simple pizza recipe with chicken topping. Sift plain flour and high protein flour into a mixing bowl. Fit machine with a dough blade. Add in yeast and combined water mixture.