From the book, "Freemasonry and its Ancient Mystic Rites" pages 72 and 73, it refers to the Christian Eucharist as been borrowed from earlier Essenes and Mithraic traditions. The following reads:
The Essenes and the Christ
"The tradition of the Mysteries was transmitted from century to century, until we find it among the Essenes, who also appear to have inherited Chaldean rites. It was in this school that the disciple Jesus lived in preparation for His ministry, after receiving a high initiation into the true Mysteries of Egypt. The Essenes had among other Chaldean rites inherited what was afterwards known as the Mithraic Eucharist, the ceremony of bread and wine and salt, which, as we shall see later, was transmitted through the ages until it was incorporated in the modern degree of the Rose-Croix of Heredom. The consecration of those elements was and is wonderful. though there is not so full a descent of the Divine Presence as in the corresponding ritual of Amen used in ancient Egypt. It seems probable. however, that the Lord Christ took the Mthraic supper as the basis of His holy Eucharist, and while preserving the ancient symbolism of the elements changed them into His own special vehicle, symbolized as His Body and Blood - the very closest and most intimate of all sacraments known to man."
"The Mithraic Eucharist brought the worshippers into close touch with the divine Life; the mystic supper of the Rose-Croix lifts the Sovereign Prince into a wonderful union with Christ, the Lord of love; in the ritual of Amen the Brn. bowed to each who had partaken of the sacrament saying, "Thou art Osiris." The holy Eucharist of the Christian Church is the last and most wonderful of all, for in it we receive Him, the Lord of Love and the sacred Host is just as fully and perfectly His vehicle as was the body of Jesus in Palestine two thousand years ago. It seems probable that He took the existing sacrament which was regularly celebrated in the Essene community, and transfigured it into another and holier Eucharist, which has become the glory of His Church from generation to generation."
Will
"I am quite sure now that often, very often, in matters concerning religion and politics a man's reasoning powers are not above the monkey's."
Mark Twain