A5
Verified
Flagstaff House
Boulder, CO · Contemporary American
Tier 2 · Provenance-Transparent What the tiers mean
Why it's listed
Flagstaff House is a long-standing fine dining room above Boulder. Its tasting menu carries two separate Japanese Wagyu courses, each naming both its prefecture and its grade: a Miyazaki A5 pain de viande with cauliflower and black truffle, and a Kagoshima A5 Wagyu with gold potato and swiss chard offered as a supplement.
Wagyu on the menu
- Japanese
- Brand / Prefecture
- Miyazaki
- Grade
- A5
- Producer
- Not listed
- Japanese
- Brand / Prefecture
- Kagoshima
- Grade
- A5
- Producer
- Not listed
Menu rotates This kitchen changes its menu, so the cuts above may vary by night. Confirm with the venue before booking around a particular one.
Buy it online
Evidence on file
“Miyazaki A5 'Pain de Viande' Cauliflower, Gold Potato, Perigold Black Truffle”
flagstaffhouse.com “Kagoshima A5 Wagyu gold potato, swiss chard, sauce of cabernet sauvignon - additional charge”
flagstaffhouse.com
Quoted from the sources checked when this listing was verified.
Address
1138 Flagstaff Road · Boulder, COGet directions See Boulder on the Wagyu map →
Price
Price tier 4 of 4
Last verified
August 23, 2026 · evidence on file
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Common questions
- Does Flagstaff House serve real Wagyu?
- Yes, and it says where the beef comes from. Flagstaff House in Boulder, CO publishes enough detail on its own materials to identify the Wagyu it sells, which is the standard this directory calls verified, last checked on August 23, 2026. That means a named Japanese brand or prefecture with its grade, an American breed status with a named producer, or an Australian producer with a marbling score.
- What kind of Wagyu does Flagstaff House serve?
- Its menu discloses Miyazaki A5 and Kagoshima A5. Each of those is taken from the venue's own current materials rather than from a review or a listing site, and the evidence behind it is quoted further down this page.
- How was Flagstaff House verified?
- By reading the venue's own current material, its menu, its site or its ordering system, and quoting the line that names the beef. Reviews, aggregator copies and press mentions are not accepted as the source, because they go stale silently. Verification is assisted by AI and every claim is stored with the page it came from, last confirmed on August 23, 2026.