That's good news.
of course, he himself has emphasized many times that the theologians closest to his heart are the Greek and Latin Fathers.
Viva il Papa!
"For Benedict XVI, in the great sweep of Christian history the mass, or Eucharist, is the sacrament that creates the Church. It is the model for the Church, and at the same time it presents the image of the Church to the world."
Given His Holiness' well know dedication to the patristic writings of the Fathers, I suspect that when he speaks of the Eucharist he in fact means the sacrament itself primarily and the Mass secondarily as that event during which the Eucharist is celebrated. His focus on the Eucharist as being definitional of the Church is very patristic. Among the earliest f the Fathers, +Ignatius of Antioch placed the Eucharist at the very center of The Church as is demonstrated by continuing themes in his letters like this snip from his Letter to the Philadelphians which also displays his image of the fullness of The Church subsisting in a single diocese:
"Take care, then, to partake of one Eucharist; for, one is the Flesh of Our Lord Jesus Christ, and one the cup to unite us with His Blood, and one altar, just as there is one bishop assisted by the presbytery and the deacons, my fellow servants. Thus you will conform in all your actions to the will of God."