Do you see that it was literal eating that was commanded, and everyone in First Century Judaism would have understood it that way?
Everything in Scripture is not a symbol, and Jesus didn't come to replace one set of symbols with another.
Jesus fuldilled ALL the symbols. It is by faith that you are saved, not of works lest anyman should boast. By faith the symbols have spiritual reality. Is the new covenant a cup? ... The Indiana Jones movie is not a proof source, searching for a magical cup.