How can one reconcile the idea of the Eucharist with the Jewish custom of never consuming any animal blood?

A shocking prophet-like statement said by Jesus and rejected by many. It was never corrected or watered down by Jesus or his disciples.

Blood is the food of God, reserved to God alone. A divine being invites you to partake of it.

I take the biblical ban on eating or drinking any kind of blood to make a literal interpretation of Jesus' words on the wine impossible.

No Jew would ever drink wine that he or she believed had been turned into any kind of blood.

Jesus and all the disciples at that Lord's Supper the night before He died drank wine from a cup on the understanding that that represented them entering into the new covenant in Christ's shed blood - which had not, at that time, yet been shed. They ate unleavened bread that had been broken on the same understanding; it represented the broken body of Christ - which had not, at that time yet been broken. Yet He told them to do that in remembrance of Him.

I don't believe that the disciples thought they were actually drinking Jesus' blood. They believed they were drinking wine that represented Jesus' blood. It's up to Catholics to offer their reconciliation of how Jews would never consume blood (Leviticus 17:12 & Genesis 9:4). It wouldn't surprise me if hardly any Catholics even knew of God's prohibition on consuming blood for all of Noah's descendants (which includes the Jews, but everyone else too!)

That's the least of its issues.

The Jewish beliefs of the first century about sacrifices is that these are a celebratory meal WITH God,

while they believed that the notion of "eating a god" was actually orchestrated during the initial Passover sacrifice as an insult to the Egyptians to show their complete incapacity.

And -- the Egyptians and Romans of the first century knew this very well.

ie: The Eucharist was clearly developed among the non-Jewish Christians as an adaptation of pre-existing "mystery cults" theology and ritual -- quite likely consciously merging in Egyptian worship based on the known connection of the Passover sacrifice to symbolically eating the chief god of Egypt.

The Eucharist doesn't use animal blood.

its not real blood

How can one reconcile the notion of a Free House Elf, when the Malfoy's want to keep their House Elves in servitude?

Should we just sit around all day long, and debate Imaginary Creatures and cult customs, and act like the discussions are actually germane? Does it make you feel superior and intelligent, when actually, you sound like a twaatberry?