I will call BS on that, unless you can come up with good evidence. The only link between 'alcohol' and Christianity that I know of is Jesus beseeching his apostles:Remember, religions such as Christianity encourage the drinking of alcohol.
And he took the cup, and gave thanks, and gave it to them, saying, Drink ye all of it;
For this is my blood of the new testament, which is shed for many for the remission of sins.
In this, he was actually enacting a (Jewish) Passover meal. If the Passover meal had Pomegranate juice, he would likely have used it.