GORDON’S QUESTION:
Why do some Christians use (unfermented) grape juice or leavened bread in Communion since what was on the table at the Last Supper was almost certainly unleavened bread and fermented wine?
THE RELIGION GUY’S ANSWER:
The Bible records that on the night of Jesus’ arrest he blessed and distributed bread saying “take; this is my body,” and shared a cup saying “this is my blood of the covenant, which is poured out for many.” He concluded with “do this in remembrance of me,” and billions of Christians have done just that across the centuries in rites known as Holy Communion, the Lord’s Supper, Mass, Holy Eucharist or Divine Liturgy.
Historians assume that, yes, Jesus’ “Last Supper” would have consisted of commonplace fermented wine, not fresh and non-alcoholic grape juice, and bread without leavening since this occurred during Jewish Passover. Modern Christians differ on the elements they serve, as we’ll see, but there’s a limit. Believers were offended by a TV ad produced for the 2011 Super Bowl (but never aired) with a pastor boosting church attendance by providing sacramental Doritos and Pepsi.
Roman Catholic canon law is precise about using the literal elements from the Last Supper at daily Masses.


