At the last supper with his disciples, "While they were eating, Jesus took a loaf of bread, and after blessing it he broke it, gave it to the disciples, and said, 'Take, eat; this is my body.'" (Matthew 26:26).
We remember these steps each time we participate in the Eucharist.
If you want to know more about how United Methodists view this sacrament, read United Methodists and the Sacraments by Gayle Felton
The metaphorical interpretation of verse 19 as foreshadowing eucharist is not the only possible interpretation. We might read it as literally descriptive of what Jesus did that day, and, so, literally descriptive of what his disciples are called to do. Think about this verse at the next church supper you attend. Who's eating with you--only other church people or some hungry crowds?