(and Which brews are those?, belonging to what respective styles of beer?; and Why_so?) To me, ‘perfection’ is the attribute of having achieved a pro_desirable state that ostensibly cannot be improved-upon; by ‘qualifiability’ I am alluding in part to the subjectivity of the matter (since determinants of desirability is largely a matter of personal taste/preference) and partly in particular to the fact that the possible beer⧼s⧽ one would most prefer often depends upon the circumstances (e.g., someone might crave a primo helles on one kind of occasion but an imperial stout on another) which together implies that a "perfect brew" is one that the beer of which on at least one type of setting is singularly (or at least on a definable if not finite list) the most satisfying to one's self (i.e., a substitution would fall below perfection). By ‘unique brew’ I mean a particular formulation (describable by a brand or other non-ambiguous identifiers), such as Coors Light or a particular homebrew (ideally that churns-out consistent results to this end), which may (but is not required to) include bounds such as “only when served on tap” or “from a bottle, not a can” or “out of a [some particular] glass” or “within ~ two months of being canned” or “only from year⧼s⧽ 20XX”(iff actually unilaterally better than any version from other years of the same model in your eyes, in which case a comment on this would be encouraged) in establishing the defining scope of domain that the brew spans ‘qualifiable perfection’ in your eyes (combined with other considerations related to timeplace setting). I would argue that if thou cannot point to any particular dupicate-brews matching a certain style (noting that some brews can match more than one style, even if *officially* it is classed under just a one) that thou can confidently deem as (within some scope) 'perfect' then of said style⧼s⧽ thou simply are not (at least as yet) an aficionado (i.e., none from the style that thou have had is in any domain of thy palate's true/choicest preferences), which correlates with the compensation that is required to interpolate comparative rankings between beers of the same style as indexed here on BeerAdvocate observing the lower proportion of weaker beers' averaged weighted scorings ranking them into highest tiers "World-Class" and "Outstanding" as compared to beers of higher-strength styles, on average; and by extension the more brews definable by a certain style that thou do consider qualifably-perfect or very close thereto suggests a greater affinity of thee to that style; mild emphasis on duplicate(i.e., repeat of the brand-make), as if you claim that the only perfect style_hooplah beer that you have imbibed was a limited-release reserve offering at a special event then this suggests unrealistic expectations of thine unto hooplahs (orand implying that said special-event brew ought to be described under a disparate or sub category of beer). For me, I can think of quite a premium few (8+) distinct masterful brews that scratch some itch or more in an unparalleled fashion and which I am confident in its retaining its respective (to-me) maximality allocation. Of distributed (open-market and available in cans/bottles) beers, I designate: Pliny the Elder (both on tap and from bottle within a few non-heated months) as the perfect dry-finish piney/floral/spicy WC double-IPA; Blazing World as the perfect danky rounded IPA; Dank and Sticky as a perfect dank not-very-fruity resinous crushable refreshing palate-bombing double IPA (the premier of the type from my experience, possibly even of broader style including freshly- hop-harvested IPAs); tallboy of Torpedo Extra IPA in evening for a full-body hops-relaxing sharp bitter-kick; Two Hearted Ale as perfect earthy flavorful 7% american IPA; one to three distinct locally-brewed pilsners (when hot and wanting more than one low-gravity lager); a few different pilsners both bohemian and german from USA and imported, depending on which flavor profile am craving (spicy and crisp vs. bready and sharp); a nitrogenated oatmeal stout on draft from a local brewery (when available) for a low-gravity creamy rich delight; bottle of O‘Hara's for a low-gravity deeply-flavorful roasty dry irish stout; can or bottle of Guiness Extra Stout for a moderate-strength stout with a tang; Bigfoot for a just-under-10% easy-drinking hop-assertive malty american barleywine (most enjoyed camping or relaxing after a cool-weather hike); several others that I may be omitting because I either have not had enough tastes of distinct tokens of the style to arrive comfortably at conclusion of its perfection-status (even though I quite like it) ,or that I did not enjoy enough that I certainly would more than once in my future (given theoretical but realistic infinitude of beer options) definitely pick it again, such as various belgian ales and ane altbier and english IPAs, as well as some others that would take a while to justify (such as from APA class, e.g. SN's Pale Ale; and plenty of non-NE IPAs left-out) because of so many to choose from and many token-brews of which not widely distributed/available.