Let's think about this. If the "Eucharist" (the cracker) in the Catholic mass is the literal body and blood of Jesus Christ, it must have all the properties of Jesus Christ, who is God. It must have ALWAYS been Jesus Christ, not just after a priest says the magic words over it, as the RCC teaches. And it must NEVER CEASE to be Jesus Christ after we eat it, and even as it passes through our digestive systems and out of our alimentary canal. God is the same yesterday, today, and forevermore.
That the priest can somehow "produce God" where God wasn't at some prior period is absurd. This is nowhere taught in Scripture.
I’m under no obligation to answer your question until you answer mine. Changing the subject is for people who have no answer or cannot admit they are wrong.
“That the priest can somehow “produce God””
This is not exactly what the Church professes. It is through the power of the Holy Spirit that the bread and wine become the Body and Blood of Jesus Christ. The priest is merely the instrument through which this happens.
The Eucharist is a mystery that can never be fully explained in words. But God as the Creator of all things can do more than we can possibly imagine. If the Word can become flesh; if He can feed 5,000 men with five barley loaves and two fish, with 12 wicker baskets full left over; if He can bring us Salvation by dying on the cross, can be raised from the dead, and can be lifted into heaven, why is it so hard to believe what He so clearly and repeatedly declared in John 6?
I don't know of any church or religious group which teaches this. This is known as a Straw Man argument: set up some ridiculous statement which the other person didn't say, and then knock it down.
Such an argumentative volley actually misses its target, since nobody who actually believes in Christ's Real Presence thinks it implies what you say. Why do you waste the electrons?
Even if I shared your unbelief, I would hesitate before I published such mockery. The Eucharist is the one sacrament which comes with both a blessing and an explicit curse. St. Paul says that if you receive without discerning the Body, you bring condemnation on yourself. And:
2 Corinthians 11:27
"Wherefore, whosoever shall eat this bread, and drink the cup of the Lord unworthily, shall be guilty of the Body and Blood of the Lord." (Geneva Bible, 1599)
Doubtless, however, your authority to define the rules for how God presents Himself to mankind is taught in Scripture, right?