No, I’m not. I’m saying that setting rules for how to bake altar breads is not on par with declaring the Trinity.
I’m not sure I would characterize this discussion simply as “how to bake bread”. Instead, I would say that the sacraments are absolutely fundamental to the very notion of the Church. That being the case, it’s pretty important to understand what the sacraments are (and what isn’t a sacrament). If we look at it this way, one question naturally arises: who has the authority to define what is and what isn’t a sacrament? Clearly, it would seem, the Church has authority to do so! Looking at Canon Law, we see:
Can. 841 Since the sacraments are the same for the whole Church and belong to the divine deposit, it is only for the supreme authority of the Church to approve or define the requirements for their validity; it is for the same or another competent authority according to the norm of can. 838 §§3 and 4 to decide what pertains to their licit celebration, administration, and reception and to the order to be observed in their celebration.
There are two words that might need to be defined here: ‘validity’ and ‘licit’ (or ‘liceity’). Validity speaks to the legal effect of an action – it answers the question “does this action actually work? does it achieve the effect that it intends?” Liceity speaks to all the requirements of the law, and whether they’ve been followed properly. Suppose I was trying to build a garage in my backyard. At the end of the project, you might ask, “were you successful – do you now have a garage in your backyard?”, and that would be a question about validity. if i built something, but it wasn’t able to house a car, there would still be
something there, but I don’t think anyone would call it a ‘garage’. On the other hand, if you asked, “did you follow all the laws for the building of garages in backyards?”, that would be a question of whether my actions were licit. Whether or not I followed the laws, the thing that I built would still exist! (Of course, I might be in real trouble with the municipality, if I didn’t get a building permit or built on an easement – but the garage would still be a ‘garage’!) So, in the realm of canon law, if something is
invalid, it is also
illicit. However, if it is
valid, then it may be either
licit or
illicit. But, it can’t be
invalid yet
licit – if I don’t actually build a garage, there’s no way of saying that I’ve followed the laws about garage construction. Make sense?
(Too much detail already? This is what I was guessing you were asking about … but we need to get through the foundations in order to answer your questions…)
OK – so, why did I bother getting into this technical discussion about these two terms? Well, it goes right to your question. Our discussion isn’t about ‘how to bake bread’; instead, it’s about what makes ‘the Eucharist’ the Eucharist. That is, if I picked up a flower and handed it to you and said “The Body of Christ”, would that be believable? Of course not! And if we argued about whether it was really the Eucharist, there would have to be some way to resolve the dispute, right? The way to resolve it, then, would be to go to the source – that is, to go to whomever had the right to define what the Eucharist is. As the quote from canon law (above) asserts, that ‘whomever’ is the Church.
So, this is probably a good place for me to ask whether you’re ok with this presentation so far. Is this leading in the direction you were hoping to go? (Yeah, I know – lots of background info! But we’re getting there!) Is this helpful? Do you disagree with what I’m saying – that the Church has the authority to define the sacraments?
There are all kinds of rules and procedures for Liturgy. If a priest leaves something out or changes something, in almost all cases, it certainly doesn’t mean Liturgy didn’t happen or prayers aren’t heard if the altar cloth is a wrong color.
Yes! Exactly! But your examples are all about
liceity – whether the priest followed all the liturgical rules perfectly. You’re making the case that things can be valid but illicit! Awesome! This is the reason that I wrote all that stuff above – we need to distinguish between “following the rules” and “actually achieving what we set out to do”! Fair enough?
Lastly, there’s not a reason in the world for us to argue about this as no one ITT is qualified to state definitely what the Church teaches about using rice flour instead of wheat.
“ITT”?

“In This Thread”?
Anyway, we’re qualified to reference Church documents, right? We’re qualified to take statements in which the Church definitively teaches things, and present them here, right?
So, find a source that supports your point, a *Vatican *source, not some priest on EWTN.
OK… now I’m really confused. Upthread, you’ve already been provided with “Vatican sources” – quotes from
Redemptionis sacramentum and from the
General Instruction of the Roman Missal (which was issued by the Vatican, and then the USCCB prepared a translation for use in the USA).
These sources document that the Eucharist must be bread made from wheat. Is there some other assertion that you’re looking to discuss?