One customer, posting a picture of the inside of the container, said: "I found what looked like mould in a new tin of Cadbury hot chocolate." Another commented: "I contacted you re mould in a can ...

Let it cool at room temperature (13), cover with the mold lids (14), then place in the refrigerator for at least 3 hours.

Now, researchers reporting in ACS' Crystal Growth & Design have found that the side of a chocolate bar facing the mold has a more orderly crystalline structure than the side facing air ...

The moulds allowed us to make 16 thin, rectangular pieces, each measuring about 1.5-by-1.75 inches. Gerbaud did the hard parts: the tempering, which gives the chocolate a glossy, firm finish ...