In situations where they know non-Catholics will be present, however, they are expected to explain the rules. On these occasions, eucharistic sharing may be both meaningful and desirable, expressing the degree of unity that the participating Christians already have with each other. At that meal, he said that the bread and wine were his body and blood, which his followers should eat and drink in remembrance of him. Various Christians understand his words very differently. Presbyterians and Methodists fall somewhere in between.
Accidents have to do with whether it is wheat or rye, dark or light, hard or soft.
In transubstantiation, Thomas Aquinas taught, the elements take on the substance of the flesh and blood of Christ, while retaining the accidents of bread and wine. The Catholic church also teaches that Christ lives in a unique way through its clergy, sacraments and members. We say no. The Eucharist is a sign of unity achieved. This can confound Protestants, who commonly open their Communion table to all other Christians.