Justin Martyr, First Apology, chapters 65–67, trans. Dods & Reith (Ante-Nicene Fathers vol. 1)

Justin Martyr: bread and wine-with-water, framed against the mysteries

what the source states

Justin (c. 155) describes the rite in detail: "bread and a cup of wine mixed with water" brought to the president, thanksgiving offered, and distribution by deacons; the food is received "not as common bread and common drink" but christologically, per the apostles' memoirs ("This is My body... This is My blood"); and the parallel rite "in the mysteries of Mithras" is presented as something "wicked devils have imitated."

what we infer

The earliest detailed outsider-facing liturgical description shows ordinary elements and a polemical stance toward mystery-cult parallels — the direction of borrowing as the second century itself framed it runs opposite to the inheritance thesis. Normative insider testimony, with the limits that implies.

limitations

• A century after the events at issue and normative in intent; describes the mainstream rite, so it constrains TIK-C011 (the original/normative Eucharist) more than TIK-C010 (some community, somewhere).