Mormons don’t use wine or grape juice. They only use water and Wonder bread (with leavening).
BTW, did you know the LDS consider all non-mormons to be ‘gentiles’, even the Jews and that they alone are the true tribes of Israel?
Mormons aren’t Christians.
PD, please correct me if I'm wrong; but:
Mormons believe that Jesus was Christ, the Son of God, and that He died on the cross for our sins.
What is your definition of Christian? How does Wonder bread, or water prevent one from being a Christian?