“After the same manner also he took the cup, when he had supped, saying, This cup is the new testament in my blood: this do ye, as oft as ye drink it, in remembrance of me.”
King James Version (KJV)
11:25 After supper - Therefore ye ought not to confound this with a common meal. Do this in remembrance of me - The ancient sacrifices were in remembrance of sin: this sacrifice, once offered, is still represented in remembrance of the remission of sins.
1Co 11:25 This do ye, as oft as ye drink [it], in remembrance of me. The memorial design of the Lord's supper is reiterated. It is not a "sacrifice of the mass", but a remembrance of Christ's sacrifice.