5A5 Izakaya
San Francisco, CA · Japanese izakaya / steakhouse
Tier 2 · Provenance-Transparent What the tiers mean
Why it's listed
5A5 is a San Francisco Financial District steakhouse-turned-izakaya (opened 2009 as 5A5 Steak Lounge, now 5A5 Izakaya at 139 Steuart St) whose entire concept is built around A5 Japanese Wagyu, the name itself references the A5 grade. Its own materials specify A5-graded Japanese Wagyu from Miyazaki prefecture, served across multiple cuts, historically priced by the ounce. Chef Cat Wang leads the current izakaya menu, which pairs the Wagyu program with Toyosu-market seafood and California produce.
Wagyu on the menu
- Japanese
- Brand / Prefecture
- Miyazaki prefecture
- Grade
- A5
- Producer
- Not listed
| Origin | Brand / Prefecture | Grade | Producer |
|---|---|---|---|
| Japanese | Miyazaki prefecture | A5 | Not listed |
The experience
New to these? Ways to eat Wagyu
Buy it online
Evidence on file
“A5 graded Japanese wagyu, specifically from the Miyazaki prefecture.”
5a5stk.com “A modern take on the traditional steakhouse in an Asian izakaya style, built around the highest grade A5 Japanese Wagyu; the name references A5 Japanese Wagyu (operating since 2009).”
5a5stk.com
Quoted from the sources checked when this listing was verified.
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Common questions
- Does 5A5 Izakaya serve real Wagyu?
- Yes, and it says where the beef comes from. 5A5 Izakaya in San Francisco, 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 5A5 Izakaya serve?
- Its menu discloses Miyazaki prefecture 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 5A5 Izakaya 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.
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