I know the correct lines from the film "Casablanca" but, when I sang "As Time Goes By" at an open-mic night, I expected a quip of "play it again, Doug" from the audience. I was not disappointed. The actual line would have been far less snappy.
I think of it as "strawberry flavour" food. It has only a passing resemblance to the actual taste of strawberries, but it is recognisable and, in most cases, is close enough for me.