A5
Verified
Mastro's Steakhouse - Costa Mesa
Costa Mesa, CA · Steakhouse
Japanese A5 VerifiedJapanese Wagyu (Brand)Sourcing Transparent
Tier 1 · Certified / Registry-Verified
Why it's listed
Mastro's Costa Mesa lists A5 Kobe New York strip from Tajima cattle in Hyogo and Japanese A5 Wagyu from Miyazaki. The same location-specific menu also names Westholme Australian crossbred Wagyu and WinterFrost American Wagyu. The restaurant is listed in the official Kobe Beef registry as No. 1328.
Wagyu on the menu
- Japanese
- Brand / Prefecture
- Kobe Beef (Tajima cattle, Hyogo Prefecture)
- Grade
- A5
- Producer
- Not listed
- Japanese
- Brand / Prefecture
- Miyazaki Prefecture
- Grade
- A5
- Producer
- Not listed
- Australian
- Brand / Prefecture
- Westholme
- Grade
- Crossbred; no AUS-MEAT marbling score stated
- Producer
- Westholme
- American
- Brand / Prefecture
- WinterFrost
- Grade
- Not listed
- Producer
- WinterFrost
| Origin | Brand / Prefecture | Grade | Producer |
|---|---|---|---|
| Japanese | Kobe Beef (Tajima cattle, Hyogo Prefecture) | A5 | Not listed |
| Japanese | Miyazaki Prefecture | A5 | Not listed |
| Australian | Westholme | Crossbred; no AUS-MEAT marbling score stated | Westholme |
| American | WinterFrost | Not listed | WinterFrost |
Sourced from
Address
633 Anton Blvd · Costa Mesa, CA 92626Get directions
Phone
Last verified
July 25, 2026 · evidence on file