Mastro's Ocean Club - Irvine
Irvine, CA · Steakhouse / Seafood
Tier 1 · Certified / Registry-Verified What the tiers mean
On the official Kobe Beef registry as No. 1885, listed there as “Mastro's Ocean Club (Irvine)”. See the U.S. Kobe list
This is not a halal restaurant. It prints a supplier brand carrying the word halal on one American Wagyu cut, which describes that product line and not the kitchen. The restaurant itself makes no halal claim, no certifier is named, and the kitchen also handles pork and alcohol. If you need halal, treat this as a sourcing detail rather than a place to eat.
How to check a halal claim →Why it's listed
Mastro's Ocean Club in Irvine's Spectrum Center is an upscale steakhouse-and-seafood destination with a dedicated, provenance-transparent Wagyu program. The current dinner menu names A5 Kobe Beef (100% Tajima cattle, Hyogo Prefecture), A5 Miyazaki New York, Australian Westholme Cross tomahawks, and WinterFrost American Wagyu, plus A5 Wagyu carpaccio and sushi. The venue is on the official Kobe Beef Association registry (No. 1885), confirming it is licensed to serve genuine Kobe. Open daily from 4 PM with reservations.
Wagyu on the menu
- Japanese
- Brand / Prefecture
- Hyogo Prefecture (Kobe / 100% Tajima Cattle)
- Grade
- A5
- Producer
- Not listed
- Japanese
- Brand / Prefecture
- Miyazaki Prefecture
- Grade
- A5
- Producer
- Not listed
- Australian
- Brand / Prefecture
- Westholme Cross Cattle
- Grade
- Not listed
- Producer
- Westholme
- American
- Brand / Prefecture
- WinterFrost Halal American Wagyu
- Grade
- Not listed
- Producer
- WinterFrost
| Origin | Brand / Prefecture | Grade | Producer |
|---|---|---|---|
| Japanese | Hyogo Prefecture (Kobe / 100% Tajima Cattle) | A5 | Not listed |
| Japanese | Miyazaki Prefecture | A5 | Not listed |
| Australian | Westholme Cross Cattle | Not listed | Westholme |
| American | WinterFrost Halal American Wagyu | Not listed | WinterFrost |
Cuts named on the Wagyu menu
Read from this venue’s quoted evidence, so a listed cut may not be on tonight. What these cuts are
Sourced from
Buy it online
Evidence on file
“A5 Kobe Beef 100% Tajima Cattle - Hyôgo Prefecture; Japanese A5 Wagyu Miyazaki Prefecture New York; Australian Wagyu Westholme Cross Cattle Tomahawk Chop; American Wagyu WinterFrost Halal Filet / Boneless Ribeye; A5 Wagyu Beef Carpaccio; A5 Wagyu Beef Roll.”
mastrosrestaurants.com “772 Spectrum Center Drive, Irvine, CA 92618 | (949) 341-0376. Hours Sun-Wed 4-9 PM, Thu-Sat 4-10 PM; reservations accepted. Menu sections include steaks & chops, wagyu options, sushi.”
mastrosrestaurants.com
Quoted from the sources checked when this listing was verified.
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Common questions
- Does Mastro's Ocean Club - Irvine serve real Wagyu?
- Yes, and it says where the beef comes from. Mastro's Ocean Club - Irvine in Irvine, CA publishes enough detail on its own materials to identify the Wagyu it sells, which is the standard this directory calls verified, last checked on July 17, 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 Mastro's Ocean Club - Irvine serve?
- Its menu discloses Hyogo Prefecture (Kobe / 100% Tajima Cattle) A5, Miyazaki Prefecture A5, Westholme Cross Cattle and WinterFrost Halal American Wagyu. 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.
- Is the Wagyu at Mastro's Ocean Club - Irvine Kobe beef?
- Yes, on both counts that matter. This venue appears on the official Kobe Beef Marketing and Distribution Promotion Association registry, and Kobe was on its verified menu when last checked on July 17, 2026. Both are required here: a registry listing alone is permission to buy Kobe, not proof that any is being served.
- How was Mastro's Ocean Club - Irvine 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 July 17, 2026.