What are the visible means in the Sacrament of the Lord´s Supper?

The Lord Christ commanded that the visible means to be used in the Lord’s Supper are to be bread made from grain flour, and wine prepared from grapes.

Assignment: Read Matt. 26:26-29, Mark 14:22-25, Luke 22:18-20, and 1 Cor. 11:23-25: the institution of the Lord’s Supper.