From the Early Church Fathers,
These ECF did not believe in Symbolism either. St. Ignatius of Antioch, the Disciple of St. John, wrote to the Smyrnaeans.
[quote=Circa 110 AD, St. Ignatius]They** abstain from the Eucharist and from prayer, because they confess not the Eucharist to be the flesh of our Saviour Jesus Christ**, which suffered for our sins, and which the Father, of His goodness, raised up again. Those, therefore, who speak against this gift of God, incur death in the midst of their disputes. But it were better for them to treat it with respect, that they also might rise again. It is fitting, therefore, that you should keep aloof from such persons, and not to speak of them either in private or in public, but to give heed to the prophets, and above all, to the Gospel, in which the passion [of Christ] has been revealed to us, and the resurrection has been fully proved. But avoid all divisions, as the beginning of evils.
[quote=Circa 110-165 AD, St. Justin Martyr]And this food is called among us Εὐχαριστία [the Eucharist], of which no one is allowed to partake but the man who believes that the things which we teach are true, and who has been washed with the washing that is for the remission of sins, and unto regeneration, and who is so living as Christ has enjoined. For not as common bread and common drink do we receive these; but in like manner as Jesus Christ our Saviour, having been made flesh by the Word of God, had both flesh and blood for our salvation, so likewise have we been taught that the food which is blessed by the prayer of His word, and from which our blood and flesh by transmutation are nourished, is the flesh and blood of that Jesus who was made flesh. For the apostles, in the memoirs composed by them, which are called Gospels, have thus delivered unto us what was enjoined upon them; that Jesus took bread, and when He had given thanks, said, “This do in remembrance of Me, Luke 22:19 this is My body;” and that, after the same manner, having taken the cup and given thanks, He said, “This is My blood;” and gave it to them alone. Which the wicked devils have imitated in the mysteries of Mithras, commanding the same thing to be done. For, that bread and a cup of water are placed with certain incantations in the mystic rites of one who is being initiated, you either know or can learn
“[T]he bread over which thanks have been given is the body of their Lord, and the cup His blood…” Irenaeus, Against Heresies, IV:18,4 (c. A.D. 200).
“He acknowledged the cup (which is a part of the creation) as his own blood, from which he bedews our blood; and the bread (also a part of creation) he affirmed to be his own body, from which he gives increase to our bodies.” Irenaeus, Against Heresies, V:2,2 (c. A.D. 200).
“But what consistency is there in those who hold that the bread over which thanks have been given is the Body of their Lord, and the cup His Blood, if they do not acknowledge that He is the Son of the Creator of the world…” Irenaeus, Against Heresies, IV:18, 2 (c. A.D. 200).
So you see in the Bible and in Sacred Tradition, the Eucharist is not symbolic. It is Real Presence of Our Beloved Jesus Christ.