The medicine of Immortality” was how St. Ignatius of Antioch referred to the Eucharist while Thomas Aquinas considered it to be the greatest of all sacraments. Given its pre-eminent status, it seems only fitting that the Church has a feast day called Corpus Christi to specifically celebrate the Eucharist. Corpus Christi is traditionally observed on the Thursday after Trinity Sunday and this year falls on June 7th.
Monsignor John Kennedy is an official at the Congregation for the Doctrine of Faith and he tells us more about the history and importance of the Corpus Christi feast, as well as its prayers, and the main customs and traditions associated with this feast day.
Listen to Susy Hodges' interview with Monsignor Kennedy on Vatican Radio