Sous Vide Flank Steak Temperature Guide
Flank is a flat, lean, long-fibered cut that's loved for its beefy flavor and hated when it's chewy. Sous vide fixes the chew by cooking it gently to medium-rare; the long fibers still need thin, across-the-grain slicing, but the texture goes from tough to tender.
Our top pick
Anova Precision Cooker 3.0
A circulator with an on-device screen makes it easy to dial these exact temps without touching your phone — our top pick for precision cooking.
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Quick comparison
| Pick | Why we like it | |
|---|---|---|
| Anova Precision Cooker 3.0 | A circulator with an on-device screen makes it easy to dial these exact temps without touching your phone — our top pick for precision cooking. | View → |
| Instant-read meat thermometer | Use one to verify your water bath and spot-check the finish — a $15 probe removes all guesswork. | View → |
Anova Precision Cooker 3.0
Editor’s PickA circulator with an on-device screen makes it easy to dial these exact temps without touching your phone — our top pick for precision cooking.
- + On-device temperature control
- + 1100W heats fast
- + Recipe library for temps
- − Premium price
- − Some app features paywalled
Free shipping on eligible items
Use one to verify your water bath and spot-check the finish — a $15 probe removes all guesswork.
- + Verifies actual temperature
- + Cheap insurance
- − Not needed if your circulator is accurate
Free shipping on eligible items
Buying advice
Cook at 129-131°F for medium-rare, 2-3 hours (flank benefits from the longer end). Dry well, sear 60-90 seconds per side for a good crust. Then the golden rule: slice very thin, perpendicular to the grain, on a bias. Flank is also the classic cut for fajitas and steak tacos — slice thin and it feeds beautifully.
FAQ
What temperature for flank steak?
129-131°F for medium-rare. It's lean, so keep it low and rely on slicing for tenderness.
How long does flank need?
2-3 hours. The longer end of the range visibly relaxes the muscle.
Why slice against the grain?
Flank's long fibers run the length of the cut. Slicing across them shortens the fibers you chew — the difference between tender and tough.
Ready to cook perfectly?
Our top pick for this guide — check today’s price and clip any on-page coupon on Amazon:
Anova Precision Cooker 3.0
A circulator with an on-device screen makes it easy to dial these exact temps without touching your phone — our top pick for precision cooking.
As an Amazon Associate we earn from qualifying purchases.
Want exact temps and times? Use our free sous vide calculators.