Here is a link to a Catholic Encyclopedia article on the Eucharist.
http://www.newadvent.org/cathen/05573a.htm#3
1 Corinthians 11 states repeatedly that we eat bread.
I guess you could state, like adiaireton8, that RCC tradition superseeds Scripture. Post 539
But is seems pretty clear that Paul states that we eat bread. Please tell me how I am not understanding 1 Corinthians 11.
1 Cor 11 also states that some members of the church were getting drunk during communion (verse 21). So if no wine is left, how does the body get drunk?
The Catholic Encyclopedia article on the Eucharist says that only the accidents of bread and wine are left and these accidents only affect the senses of the body. But getting drunk is not a sense, it is a chemical reaction.
So if it looks like wine, tastes like wine, affects the body like wine, it must be wine. But it is also the true blood of Christ; He said so! I don't understand it. It is a mystery of God.