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In fact, bb, as I was originally saying, the Eucharist has remained the same for the Orthodox, Catholics, Orientals, Lutherans, Anglo-Catholics etc.

You can see it in scripture, you can see it in Ignatius of Antioch's Letter to the Philadelphians 4 [A.D. 110]).

"Make certain, therefore, that you all observe one common Eucharist; for there is but one Body of our Lord Jesus Christ, and but one cup of union with his Blood,

or Ignatius' Letter to the Romans 7:3 [A.D. 110]).

"I have no taste for corruptible food nor for the pleasures of this life. I desire the bread of God, which is the flesh of Jesus Christ, who was of the seed of David; and for drink I desire his blood, which is love incorruptible

or best is what Ignatius wrote of some heretics in (Letter to the Smyrnaeans 6:2–7:1 [A.D. 110]).
"Take note of those who hold heterodox opinions on the grace of Jesus Christ which has come to us, and see how contrary their opinions are to the mind of God. . . . They abstain from the Eucharist and from prayer because they do not confess that the Eucharist is the flesh of our Savior Jesus Christ, flesh which suffered for our sins and which that Father, in his goodness, raised up again. They who deny the gift of God are perishing in their disputes" and Ireneus Against Heresies 4:17:5 [A.D. 189]).
"He took from among creation that which is bread, and gave thanks, saying, ‘This is my body.’ The cup likewise, which is from among the creation to which we belong, he confessed to be his blood. He taught the new sacrifice of the new covenant, of which Malachi, one of the twelve [minor] prophets, had signified beforehand: ‘You do not do my will, says the Lord Almighty, and I will not accept a sacrifice at your hands. For from the rising of the sun to its setting my name is glorified among the Gentiles, and in every place incense is offered to my name, and a pure sacrifice; for great is my name among the Gentiles, says the Lord Almighty’ [Mal. 1:10–11]. By these words he makes it plain that the former people will cease to make offerings to God; but that in every place sacrifice will be offered to him, and indeed, a pure one, for his name is glorified among the Gentiles"
This only backs up scripture -- if you wish to deny Scripture which clearly says "this is my body", then go ahead

In fact bb, take heed of what Ignatius said

"Take note of those who hold heterodox opinions on the grace of Jesus Christ which has come to us, and see how contrary their opinions are to the mind of God. . . . They abstain from the Eucharist and from prayer because they do not confess that the Eucharist is the flesh of our Savior Jesus Christ, flesh which suffered for our sins and which that Father, in his goodness, raised up again. They who deny the gift of God are perishing in their disputes"

This only ties in with what scripture has clearly stated of Christ inaugurating the Eucharist and Paul reiterating it in Corinthians. Deny scripture if you wish.