Theodoret of Cyrus (d. 457AD) commented on what for him was an ancient practice of the Christians sharing a meal together after their Eucharistic celebration. He saw it as a wonderful opportunity for the wealthy to share with and minister to the poor and needy members of the Christian community. He presents this as normal and expected behavior for the local parish.
They were in the habit in the churches, in fact, after the eucharistic ritual, of eating in common, rich and poor alike, and from this practice great consolation derived for the needy; the affluent brought provisions from home, and those in the grip of poverty shared in the good cheer on account of their participation in the faith. (Commentary on the Letters of St. Paul, p. 205)