Saucy Rossy BBQ
Beef

Steak School: Skirt Steak

An underrated, beefy skirt steak seasoned with smoky Ancho Americano chili rub, grilled hot and fast over charcoal, and sliced against the grain.

TimeHot & fast Prep10 min YieldServes 3–4 CategoryBeef Watch3:42
Steak School: Skirt Steak — watch on YouTube

Watch the full cook on YouTube

Method

  1. 1Trim the skirt steak of any excess membrane or surface fat.Trim the silverskin and the tough membrane properly. Unlike fat, it does not render on a fast cook and leaves the steak feeling chewy no matter how well you slice it.
  2. 2Season it with Whiskey Bent BBQ Ancho Americano rub — a smoky chili blend.Pat it bone dry before seasoning. Skirt is often under half an inch thick — there is no time for surface moisture to boil off.
  3. 3Grill hot and fast over charcoal to take on a great sear.Get the fire as hot as it goes. If the grate is not ripping, a thin steak cooks through before it browns at all.
  4. 4Rest, then slice against the grain — it makes all the difference for tenderness.Rest briefly, then cut the steak into shorter lengths first. Skirt's fibres run across the narrow width of the strip, not along it.
  5. 5Serve straight off the board, or pile it into tacos or sandwiches.Slice thin across those fibres. Slicing lengthways is the classic mistake and it makes the steak inedible.

Watch it on YouTube

What each ingredient is doing

Skirt steak
The diaphragm muscle, with the coarsest, most open grain of any steak. That is where its enormous beef flavour comes from, and it is also why slicing technique matters more here than on any other cut. Inside and outside skirt are both diaphragm; outside is thicker and more tender.
Ancho Americano rub
A smoky chili blend. Skirt's strong beef flavour stands up to an assertive rub, and chili suits the cut's traditional use in fajitas and carne asada.
Charcoal
You need maximum heat, so a full chimney and a spread bed. Skirt is the cut where a merely hot grill genuinely will not do.

Temperature guide

StageTempWhat it means
Medium-rare130–135°F / 54–57°CThe target. Skirt tightens fast past this.
Cook time2–3 min per sideIt is thin. This is not a steak you walk away from.
Too far140°F+ / 60°C+Plenty of fat between the fibres but little within them, so it firms quickly.
Rest5 minutesBrief — it is thin and loses heat fast.

Pitmaster tips

  • Skirt is the diaphragm muscle, and it has the coarsest, most open grain of any steak. That is where its enormous beef flavour comes from, and it is also why slicing technique matters more here than on any other cut.
  • Trim the silverskin and the tough membrane properly. Unlike fat, it does not render on a fast cook, and left on it makes the steak feel chewy no matter how you slice it.
  • Get the fire as hot as it goes. Skirt is thin — often under half an inch — so if the grate is not ripping the steak is cooked through before it has browned at all.
  • It is done in a couple of minutes a side, so stay at the grill. This is not a cut you walk away from.
  • Slice thin and hard across the grain, and cut the steak into shorter lengths first if you need to. Skirt's fibres run across the narrow width of the strip, not along it — slicing lengthways is the classic mistake and it makes the steak inedible.
  • Do not go past medium-rare. Skirt has plenty of fat between the fibres but not much within them, so it tightens fast.
  • Cut the steak into shorter lengths before slicing. Skirt's fibres run across the narrow width of the strip, and slicing lengthways is the single most common way this cut gets ruined.
  • Trim the membrane properly. It does not render on a fast cook and it will make the steak feel chewy however well you slice it.
  • Get the fire as hot as it goes. On a cut this thin, a merely hot grill cooks it through before any crust forms.
  • Save the wing of thin tail meat for something else if your piece has one — it is too thin to cook alongside the rest.

If it goes wrong

It is chewy
Almost certainly the slicing direction. Skirt's grain runs across the short width of the strip, so cut it into shorter sections first and then slice thin across those fibres. Slicing along the length leaves the long fibres intact and nothing will fix it.
It is still chewy even sliced correctly
The membrane was left on. It does not render on a fast cook — trim the silverskin off before seasoning.
It cooked through before browning
The fire was not hot enough. Skirt is thin and needs maximum heat to build crust in the time available.
Flare-ups charred it
Skirt is fatty and drips. Keep a clear zone to move it to, and shut the lid rather than spraying water.
It shrank and curled
Very high heat on a thin cut causes some shrinkage — that is normal. Curling usually means uneven thickness; a light pounding evens it out.

Ways to change it up

Fajitas
The traditional use, and outside skirt is the traditional cut. Marinate in lime, garlic and chili, grill hot, slice across the grain and serve with peppers and onions.
Carne asada
Citrus and chili marinade, cooked over charcoal, sliced thin for tacos. Skirt's open grain takes a marinade better than any other steak.
Marinated
Even 30 minutes makes a difference, because that coarse grain is so much surface area.
Chimichurri
Acidity against a rich, beefy cut. Works as well on skirt as on bavette.
Cast iron
A ripping pan indoors gives an even full-surface crust. Ventilate well — it will smoke.

What to serve it with

  • Tortillas, with peppers, onions and lime.
  • Chimichurri or a salsa verde.
  • Rice and beans for a full plate.
  • Pickled onions or jalapeños.
  • A cold lager or a margarita.

Storage & reheating

Cooked skirt keeps 3–4 days refrigerated and is best treated as taco or sandwich filling from that point rather than as steak — it reheats poorly on its own because it is so thin, but folded into a hot tortilla or a pan of rice it is excellent. Store it unsliced and cut it as you use it.

Raw skirt freezes for 6–9 months wrapped airtight. It is often sold frozen anyway, and its thinness means it thaws in a few hours. Because it takes marinade so well, freezing it already marinated works nicely — it seasons as it thaws.

FAQ

What is the difference between inside and outside skirt?

Both are diaphragm muscles. Outside skirt is thicker, more even and more tender, and it is the one traditionally used for fajitas — it usually goes to restaurants. Inside skirt is thinner, wider and a little chewier, and it is what you most often find at retail. Both cook the same way; the inside cut just needs more care with slicing.

Why is my skirt steak chewy?

Almost certainly the slicing direction. Skirt's grain runs across the short width of the strip, so it must be cut into shorter sections and then sliced thin across those fibres. Slicing along the length of the steak leaves the long fibres intact and no amount of good cooking will fix it. Leaving the membrane on is the other common cause.

How long do you cook skirt steak?

Two to three minutes a side over the hottest fire you can build. It is a thin cut, so the only way to get a crust before the middle overcooks is maximum heat and minimum time. Pull it at medium-rare and rest it briefly.

Does skirt steak need to be marinated?

It does not need to be, but it takes a marinade better than almost any cut because its open grain gives so much surface area. Even 30 minutes makes a difference, which is why it is the traditional cut for fajitas and carne asada. A dry rub like a chili blend works just as well if you want the pure beef flavour.

What is the difference between inside and outside skirt?

Both are diaphragm muscles. Outside skirt is thicker, more even and more tender, and it is the one traditionally used for fajitas — it usually goes to restaurants. Inside skirt is thinner, wider and a little chewier, and it is what you most often find at retail. Both cook the same way; the inside cut just needs more care with slicing.

Does skirt steak need to be marinated?

It does not need to be, but it takes a marinade better than almost any cut because its open grain gives so much surface area. Even 30 minutes makes a difference, which is why it is the traditional cut for fajitas and carne asada. A dry chili rub works just as well if you want the pure beef flavour.

Know your cook

More information, cause recipe back stories are stupid

No 500-word life story — just the good-to-know stuff on what’s actually in this cook. Here’s the rundown on every real ingredient, health and nutrition wise.

Beef
Beef is a complete protein and one of the best food sources of highly absorbable heme iron, zinc, and vitamin B12 — key for energy, immunity, and healthy blood. Fattier BBQ cuts are calorie-dense, so lean trimming and sensible portions keep it balanced.

General nutrition info only, not medical or dietary advice — portions, brands and add-ons change the numbers.

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