I have been watching the French version of "Maigret" on TalkingpicturesTV. There was an episode called 'Maigret chez les Flamands' (Maigret and the Flemish House). The Flemish house (or shop) featured a bar. There was a list of drinks displayed on the wall. There were no prices on the list, but each drink had the letters 'KB' next to it. One of the drinks was 'Water', which surprised me, being in English. Do you know what KB stands for? It could be a Flemish abbreviation.
That was quick, wolf! But the letters KB were after each drink. There were about seven or eight drinks in the list (unfortunately, I deleted the episode before I thought of asking my question here). The letters were neatly in a column on the right-hand side of the list, where you might expect to see the price displayed.
Could it mean Kleine Beer meaning a small measure of beer like our equivalent of a half. Certainly not French but could be Flemish/Dutch similar to German.
Thanks to TheWinner. I was so wrong about the list -- only three items on it and K.B. not in a neat column. 'EAU' and 'WATER' being the first two. There are very few French words that begin with K, so a German or Flemish abbreviation seems likely. But, if they were displaying the size of the glass that the drink might be served in, surely the price would follow?