No I believe you've misunderstood the Heidelberg. It articulates the Reformed view.
in the Reformed view the bread is the very bread of heaven that we will enjoy in the marriage supper of the lamb. Christ is spiritually present in the elements and is truly received by faith.
I just re-read the Heidelburg more carefully and I still don't find ^^.
The following sounds like the Zwinglian view to me:
#76 Q.
How does the Lord's supper signify and seal to you that you share in Christ's one sacrifice on the cross and in all his gifts?
A. In this way: Christ has commanded me and all believers to eat of this broken bread and drink of this cup
in remembrance of him. With this command he gave these promises:
1 First, as surely as I see with my eyes the bread of the Lord broken for me and the cup given to me, so surely was his body offered for me and his blood poured out for me on the cross. Second, as surely as I receive from the hand of the minister and taste with my mouth the bread and the cup of the Lord as sure signs of Christ's body and blood, so surely does he himself nourish and refresh my soul to everlasting life with his crucified body and shed blood.
#77 Q.
What does it mean to eat the crucified body of Christ and to drink his shed blood? [
this still just seems a remembrance, ie Zwingli, rather than something being the very bread of heaven]
A. First, to accept with a believing heart all the suffering and the death of Christ, and so receive forgiveness of sins and life eternal.
1 Second, to be united more and more to his sacred body through the Holy Spirit, who lives both in Christ and in us.
2 Therefore, although Christ is in heaven
3 and we are on earth, yet we are flesh of his flesh and bone of his bones,
4 and we forever live and are governed by one Spirit, as the members of our body are by one soul.
5
#78 Q.
Are then the bread and wine changed into the real body and blood of Christ? [still no reference to the bread of heaven or a spiritual mystery, but rather simply a remembrance. ]
A. No. Just as the water of baptism is not changed into the blood of Christ and is not the washing away of sins itself but is simply God's sign and pledge,
1 so also the bread in the Lord's supper does not become the body of Christ itself,
2 although it is called Christ's body
3 in keeping with the nature and usage of sacraments.
4
#79 Q.
Why then does Christ call the bread his body and the cup his blood,or the new covenant in his blood,and why does Paul speak of a participation in the body and blood of Christ?
[still no reference to the bread of heaven or a spiritual mystery, but rather simply a remembrance. ]
A. Christ speaks in this way for a good reason: He wants to teach us by his supper that as bread and wine sustain us in this temporal life, so his crucified body and shed blood are true food and drink for our souls to eternal life.
1 But, even more important, he wants to assure us by this visible sign and pledge,
first, that through the working of the Holy Spirit we share in his true body and blood
as surely as we receive with our mouth these holy signs in remembrance of him,
2 and, second, that all his suffering and obedience are as certainly ours as if we personally had suffered and paid for our sins.
3
#80
[still looks like only a remembrance]
A.The Lord's supper testifies to us, first, that we have complete forgiveness of all our sins through the one sacrifice of Jesus Christ, which he himself accomplished on the cross once for all;
1 and, second,
that through the Holy Spirit we are grafted into Christ,
2 who with his true body is now in heaven at the right hand of the Father,
3 and this is where he wants to be worshiped.
Where do you see the description of the Reformed view you had mentioned embedded here in the Heidelberg Catechism? It may just be my filter is strongly tuned to the Zwingli view so I'm not picking up the other viewpoint in my own reading of it. No mention of heaven's feast, or Christ's spiritual presence.
I'm aware that Calvin had mentioned something along the lines of a mysterious spiritual presence (I don't have a citation for that) but I wasn't aware that comment really took hold within the Reformed forms of doctrine, at least in the forms I'm familiar with (particularly the Heidelberg Catechism).
I'm eager to see your response. I love to examine my perspectives in the view of finding and owning up to (eradicating?) any filters that I'm blind to. I came to realize I had a few (!!) several years ago and keeping an eye out for them now has really deepened my Bible studies and understanding of Christ.