Jesus Christ present in the bread and wine Christians bless in memory of Him has always been a mind-blowing concept. The feast of Corpus Christi, on the second Thursday after Pentecost, was introduced to reinforce the teaching and celebrate Jesus really present.
Here is a short poem about God's disguise White Biscuit (pdf 12KB)

And a collection of poems and parish stories to bring to life the theology of the Eucharist.
Flesh and Blood (pdf 112KB)