Diana Madeline is a useful focus if you're interested in following a Cabernet-led wine through different seasons. Cullen's 2021 account identifies Cabernet Sauvignon planted at Wilyabrup in 1971 (Cullen’s 2021 Diana Madeline notes).

The label gives the collection continuity, but the release details still need checking year by year. Begin with the kind of comparison you'd like to make, not an assumption that the most celebrated year must be your next purchase.

Read the producer account alongside the regional story

Cullen's 2021 notes describe rain, bird pressure and harvesting constraints, with low yields helping the team bring in the crop (Cullen’s 2021 Diana Madeline notes). This gives more specific context than a regional verdict alone.

Keep vineyard and farming information accurately attributed when it matters to your research. It doesn't replace questions about the bottle's later storage. The producer's work and the offered wine's subsequent history are different parts of the account.

Compare 2021 and 2022 without filling the gaps

Cullen records 15 months in oak, 50% new, for 2021 (Cullen’s 2021 Diana Madeline notes). For 2022 it records 14 months in oak, 55% new, and a blend of 89% Cabernet Sauvignon, 5% Merlot, 3% Cabernet Franc and 3% Malbec (Cullen’s 2022 Diana Madeline notes).

Put those facts in their own vintage columns. Don't copy the 2022 blend into another year because the field is empty. The blank is useful: it tells you what still needs asking.

Use a difficult season to ask a better question

The producer's account of 2021 explains its own harvest challenges and decisions (Cullen’s 2021 Diana Madeline notes). Read that alongside the regional guide rather than making a blanket decision about every wine from the year.

Equally, don't let a favourable regional report settle the whole purchase. Check the release note, available history and condition of the bottles. A strong reputation can't tell you what happened after the wine left the winery.

Make long cellaring guidance usable

Cullen's 2021 page describes the wine as drinkable now or suitable for cellaring up to 50 years (Cullen’s 2021 Diana Madeline notes). That is the producer's guidance, not a requirement to wait or our assurance of future quality.

Give your own plan a review date. You might want to compare releases or open several bottles at intervals. Record what you enjoy along the way; the longest possible wait isn't automatically the most rewarding use of your collection.

Inspect the proposal, not just the reputation

Confirm the full label, year, format and quantity. Ask for actual-bottle images where appropriate and specify packaging if it matters. For mature wine, request the available storage and ownership account.

Separate documents from seller statements and mark missing history plainly. Assess each component of a mixed-vintage parcel on its own evidence. One well-documented bottle doesn't establish the past of every other bottle beside it.

Explain what you'd like to add

List Diana Madeline vintages you own and the years you want to find. State whether you're planning a tasting, filling a particular gap or making a broader cellar addition. Include the budget, quantity and any important date.

If other Margaret River wines interest you, make that a separate discussion rather than an assumed substitution. Aaron and the team can explore the request. We don't claim a Cullen allocation, guaranteed supply or a financial outcome.

Check the research references

These are the references used on this page. Addresses are shown as text; the site's reading links stay on WineInvestments.

  • Cullen’s 2021 Diana Madeline noteshttps://cullenwines.com.au/products/2021-diana-madeline
  • Cullen’s 2022 Diana Madeline noteshttps://cullenwines.com.au/products/2022-diana-madeline

Put the research into a brief.

Tell Aaron and the team what you'd like to find, what you already own and what you want to spend. You don't need every detail settled before asking.

Tell us what you're looking for