75 All this is common knowledge, and it is also common knowledge that only one sacrifice is offered in the Church. In this Eucharistic sacrifice Christ Himself, our Salvation and our Redeemer, immolates Himself each day for all of us and mercifully pours out on us the countless riches of His grace. No blood is shed, but the sacrifice is real, just as real as when Christ hung from a cross of Calvary .
Source: Ad Petri Cathedram (Vatican.va)