This is an asian legend, soon spread beyond the borders of the Celestial Empire.
I experienced it in Hong Kong a few months ago.
In any Italian restaurant, next to the plate take place a small bowl, not too concave, one for each diner.
You do not need to put the bread in, as it happens here, but a mixture of oil and vinegar.
The waiter comes with two bottles, one in each hand: one with the oil, the vinegar in the other.
The condiments end up together in the bowl, and what thay expect the customer do – thinking that it is something typically Italian – is to dip bread into the solution with dots formed by oil & vinegar.
When I asked to have only oil, he looked at me as he wanted to say: “Are you sure you’re Italian?”. Oh, yes.
Thanks to Marco Gemelli