To turn Chau Colat into hot chocolate requires the drinker dip it into a cup of hot milk (heated to 75 degrees) and stir it. For a similar review see Chocablog. Kath at Chocablog probably does a better photo.
Your reviewer purchased this treat from Chocolates on Parade in Norwood. Chau Colat cost $4.30 for a single hot chocolate so this is pretty expensive for a home made drink but the taste was good, dark and Belgian.