I also think those polls are suspect, in order to get sensational headlines.
At least this time it's about the UK. Though I wonder how many people in the US know where bacon comes from.
I recall being confused by that as a kid: "why is it called a hamburger when it's made of beef?" Fortunately everyone calls them beefburgers.
I did eat a hamburger that was actually made of ham. It wasn't very nice.
The name Hamburger is derived from immigrants (to the US) from Hamburg Germany. It's a bit irritating to me to hear people rename Hamburgers made form something other than beef by replacing the Ham in Hamburger -- like Turkeyburger, Veggieburger, Salmonburger, etc.
Similarly the name Frankfurter (ie Hot Dog) is derived from Frankfurt Germany.
I wonder how many people think Hot Dogs come from dogs. Come to think of it I wonder how many Hot Dogs do come from dogs.
I am a little surprised I must admit, but in an era where some people don't even know who Freddy Mercury is I guess cases like this is to be expected.
Wasn't that Francis Bacon?