Both. Please hang with me here. I’m typing this as I remember the wording of the consecration at the Mass of the bread and wine.
“On the night he was betrayed, he took the bread, blessed it, broke it and said: Take this, all of you. Eat it. This is my Body which will be given up for you.”
“He took the cup, blessed it, passed the cup to His disciples and said: Take this, all of you. Drink from it. This is the cup of My Bood. The Blood of the new and everlasting covenant. It will be given up for you.”
Throughout the Mass there are many references to His sacrifice.
The Mass is:
A Remembrance
A Meal
A Sacrifice