I was raised a Catholic, I believe doctrine changed at some time, maybe Vatican II? I remember being told as a child (a long time ago :) not to eat some time before communion.
Maybe that's obsolete now.
... “transubstantiation” refers to a change in which the substance of a thing—what it really is—changes, while its physical characteristics do not. Of course, this sort of change only occurs in the Eucharist, which, though it appears to remain bread and wine throughout the Mass, nevertheless truly becomes the flesh and blood of Jesus.
I think this is a difference in language expectations, because when and where I grew up, some Protestants thought that Catholics believed either that the physical characteristics of the Eucharist changed during the blessing or consumption of the Eucharist, which your link seems to demonstrate to me that you are not agreeing with.
The Lutherans would like a word.