I have been to that Tintin shop and bought some stationary items there. Long story shot, how it all started: (have also been to Tibet, of course.)
FYI, the mussels most probably come from Netherlands (the biggest mussel producer in Europe). One time when the mussel season was about to begin but deliveries were delayed and the Belgians all got their knickers in a knot.
Going home tomorrow and looking forward to eating steamed mussels at home (eur.5/kg from supermarket. When in season, 2 kilos for the same price).