The Eucharist is ‘the source and summit of the Christian life.’ ‘The other sacraments, and indeed all ecclesiastical ministries and works of the apostolate, are bound up with the Eucharist and are orientated toward it. For in the blessed Eucharist is contained the whole spiritual good of the Church, namely Christ himself, our Pasch.’

Catechism of the Catholic Church 1324


​Eucharist is the sacrament that completes the process of initiation and is when one can fully participate in the Eucharist by receiving Holy Communion.
 
Eucharist is unique among the sacraments as it is at the heart of our faith, or according to the Catechism, the “source and summit”. For Catholics, the Eucharist, or Mass, is the most powerful way we encounter the real presence of Jesus Christ. Sunday after Sunday (some, of course, gather everyday), Catholics gather to celebrate the Eucharist, the ritual in which, by the power of the Holy Spirit, bread and wine are transformed into the Body and Blood of Christ. We who celebrate are also transformed, becoming Christ’s presence to others, and recognising the presence of Christ in others.