About 80 million packets of chocolate digestives are made ... the company has said that as the plain biscuits pass through a "chocolate reservoir", the chocolate actually coats the underside ...

About 80 million packets are made every year ... the company has said that as the plain biscuits pass through a "chocolate reservoir", the chocolate actually coats the underside of it.

An astonishing 80 million packets of the humble teatime staple ... Chocolate Digestive happened roughly 25 years after the plain biscuit and two years before McVities launched the Jaffa cake.