Another case of visitors to Venice being grossly overcharged for food in restaurants around St Marks Square has emerged.

Four Japanese students were charged a total of £970 for three steak suppers, some mineral water and a plate of fried fish, excluding alcoholic drinks, at the Osteria da Luca. The mayor of Venice is said to be “outraged” and “investigating” this latest of a string of similar cases in the city. For some it might be more constructive if he oversaw the publication of a blacklist of places to avoid, and released it to the international tourist media.

Or would that be a dog biting the hand that feeds it?