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In Chile these words are defined by decree, and they ask for far less than you would assume. The gap between a Reserva and a Gran Reserva is half a degree of alcohol and a pass through oak. That is all.
These «complementary quality mentions» are defined in Decree 464 of the Chilean Ministry of Agriculture, and only wines with a Denomination of Origin bottled in Chile may use them. There are five:
The legal minimum for a bottled wine sold for direct consumption is 11.5 degrees (article 36 of Law 18.455). So in practice: a Reserva starts at 12°, and a Gran Reserva at 12.5°. Chile's Agricultural and Livestock Service, or a certifier it authorises, is what verifies compliance.
If you come to Chilean wine from Spain, «Reserva» sounds like years. In Rioja, a Reserva and a Gran Reserva must spend a minimum time in barrel and in bottle before release, which is why the word tells you something real about the wine's age.
⚠️ Not in Chile. The decree does not require a single day of ageing for any of the five mentions. A Chilean Gran Reserva may have been bottled three months ago. All it guarantees is half a degree more alcohol and that oak touched it — without saying for how long, or whether the barrel was new, used, or chips.
It sounds like the top tier and it is the only one with no numeric requirement at all. A wine can say Superior while meeting only the legal alcohol minimum and never having seen a barrel.
Both ask for the same extra degree of alcohol, but Reserva Privada leaves oak optional while Gran Reserva makes it mandatory. The more exclusive-sounding name is, technically, the less demanding of the two.
They are worth something as a hint, not as a guarantee. A winery that prints Gran Reserva is usually pointing at its upper line, and there tends to be more work behind it. What you cannot do is compare across producers: one serious winery's Reserva can beat another's Gran Reserva, and both are within the law.
What tells you considerably more about the bottle in your hand:
The practical rule: only compare mentions within the same winery. Between one brand's Reserva and its Gran Reserva, the price gap usually reflects something real. Across different brands the word tells you nothing — there, look at valley, vintage and grape instead, or simply taste and write down which one you liked.
That last part is what pays off most over time and almost nobody does: writing it down. After twenty bottles, your own list predicts what you will enjoy better than any label ever will.
All of that is printed on the label, and Cru-Zu reads the label: scan it and the bottle is saved with its vintage and its producer. Free up to 15 bottles, on iPhone, iPad and Mac.
Download Cru-Zu on the App StoreUnder Decree 464, a Reserva needs at least 0.5 degrees of alcohol above the legal minimum and oak treatment is optional; a Gran Reserva needs 1 degree above the minimum and oak treatment is mandatory. Neither requires any ageing time.
Not necessarily. Chilean law requires that it received wood treatment, but sets no minimum time in barrel or in bottle, unlike the rules in Spain.
It is the least demanding of the five mentions: it only asks for distinctive organoleptic characteristics of its own, with no requirement for alcohol content or oak treatment.
11.5 degrees for a bottled wine intended for direct consumption, under article 36 of Law 18.455. Fortified and liqueur wines have higher minimums.
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