Food Lens Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Food Lens · Protein
Flank steak
Robust, beefy, slightly mineral; lean with a firm, meaty bite when sliced thin against the grain.
Lens analyzedFlank steak is a lean, flat cut from the cow's lower belly (abdominal) muscles. It has long, prominent muscle fibers that deliver bold, beefy flavor when cooked properly — but the grain direction is everything when slicing.
Where it comes from
Flank steak comes from the hard-working abdominal muscles of the steer — lean, flavorful, and affordable for that reason. It found its way into American home cooking through dishes like London broil and Tex-Mex fajitas, and has long been valued in Latin American cuisines as ropa vieja or in Brazilian churrasco. Its lean profile and bold flavor have made it a go-to for weeknight meals.
Varieties — Sold as a single flat slab, typically 1–2 lbs. Sometimes labeled 'London broil' at US supermarkets (though London broil is really a cooking method, not a cut). Skirt steak is a close, thinner relative.
In Taiwanese and mainland Chinese home cooking, thinly-sliced flank is a classic stir-fry protein, marinated in soy sauce, rice wine, and cornstarch before hitting the hot wok.
In a modern kitchen — Always slice against the grain — perpendicular to the long muscle fibers — in thin slices. Cutting with the grain makes the meat tough and chewy regardless of how perfectly it was cooked.
Buying it
Look for a bright cherry-red color with minimal surface fat. The grain should be visible and clearly directional — this helps you slice correctly later. Avoid packages with gray patches or excessive liquid.
Storing it
Keep refrigerated in its original packaging or tightly wrapped, and use within a few days. Freeze for longer storage — a slippery texture or off odor means it should be discarded.
Keeps about 4 days in the fridge.
Out of flank steak? Good swaps
- Skirt steak — Thinner, slightly richer fat; same high-heat method and against-the-grain slicing required; 1:1 by weight
- Hanger steak — More tender with a deeper minerality; premium price; 1:1 substitution in most preparations
- Sirloin steak — More forgiving to cook; milder flavor; suitable in stir-fries and fajitas at 1:1 weight
General cooking guidance — always check the labels on the products you use. Listahan’s allergen checks run automatically when you plan a recipe in the app. Not medical advice.
Recipes that use flank steak
Common questions about flank steak
What can I use instead of flank steak?
Good swaps include Skirt steak, Hanger steak, Sirloin steak. Each behaves a little differently — see the swaps above for notes, and always check labels for allergens.
How do I store flank steak?
Keep refrigerated in its original packaging or tightly wrapped, and use within a few days. Freeze for longer storage — a slippery texture or off odor means it should be discarded. It keeps about 4 days in the fridge.
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Make flank steak about your kitchen — with Listahan Pro
Everything above is free, forever. Pro adds the Household Lens — the same food, seen for your family:
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Checked for each member
Flags flank steak per person against your household's allergies and school rules — not just a generic "contains" tag.
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Pantry-aware
Knows whether you already have it, what is running low, and the best swap from what is in your kitchen tonight.
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What it costs near you
A real price from the Presyo community index, so you can plan the budget — not guess.
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Your household memory
Who likes it, plus your own private notes — brand, where you keep it, who skips it.
Allergen safety is always free — Pro adds the automation, never the safety.
Cook with flank steak — safely
Plan a recipe in Listahan and the household allergen check runs automatically — every plan, every swap, every lunchbox. Safety is never paywalled.