Article I. On The Remote Matter Of The Eucharist

169. The remote matter of the Eucharist is wheaten bread alone and wine from the vine. Thus teaches the Council of Florence.²¹ The reason is that it is established that Christ employed bread and wine in the institution of this sacrament. Now, wheaten bread alone is called simply bread, and natural wine from the vine alone is called simply wine. For the sake of clarity, the valid and licit matter both of bread and of wine must be treated separately.

²¹ Denz., n. 698.