Vatican II teaches us that Eucharist is the source and summit of Christian life where our faith is nourished and sustained. In this context Fr. S. Joseph Lionel explains the history and theology of the Eucharist. This book also addresses the biblical background for Eucharist, the developments during the patristic period, the maturation of Eucharistic theology, especially in the context of controversies and church’s response to them. This simple and comprehensive source on Eucharistic theology will serve as a resource book for all those who are interested in learning Catholic theology of Eucharist.