Skirt Steak: The Intensely Beefy Cut for Fajitas

Skirt steak is proof that flavor and tenderness are not the same thing. It is one of the most intensely beefy cuts on the animal, long, thin, and loose-grained, and it is the steak behind fajitas, carne asada, and steak tacos the world over. It is chewier than a loin steak, but marinate it, sear it hard, and slice it thin against the grain, and it is juicy, deeply flavored, and endlessly useful. For bold beef flavor on a budget, few cuts compete.

Where it comes from

Skirt steak is cut from the beef plate, the belly, and it is actually the diaphragm muscle. There are two: the outside skirt, which is thicker and more tender, and the inside skirt, which is thinner and a bit chewier. Both are long, flat, and have a pronounced, coarse grain that runs across the width, which is exactly why slicing direction matters so much with this cut.

What it tastes like

Intensely, almost aggressively beefy, more so than almost any other steak, with a loose, open grain that drinks up marinade. That coarse texture means it is chewier than a tenderloin or strip, but the flavor more than makes up for it. Cooked hot and fast to medium-rare and sliced thin across the grain, it is tender enough and packed with the deep beef flavor that makes fajitas sizzle.

How to cook skirt steak

Blazing hot and very fast. Marinate the skirt to season and tenderize it, then sear it over the highest heat you can manage, just a minute or two a side, since it is thin and overcooks in a flash. Pull it at medium-rare, rest it briefly, and slice it thin across the grain, which is essential for tenderness given its coarse fibers. A ripping-hot grill or cast iron pan is the right tool, and a little char is welcome. We sear in bare cast iron or over live fire, never plastic. Our grilling and pan searing guides cover the method.

The two rules that make or break skirt steak are do not overcook it and always slice thin against the grain. Get those right and its chewiness disappears, leaving only flavor.

Classic dishes to make

Skirt is the classic fajita steak, marinated, grilled, and sliced to sizzle with peppers and onions. It is the carne asada in tacos and burritos, and the beef in a Philly-style sandwich. Cut across the grain, it tops rice bowls and salads. In steakhouses it appears as a marinated grilled skirt with chimichurri. Its bold flavor makes it a favorite for anything served with punchy, bright accompaniments.

Common mistakes

Slicing with the grain is the classic error, leaving even a well-cooked skirt chewy, so always cut thin across the grain. Overcooking this thin cut past medium-rare toughens it, so keep it fast and rosy. Skipping the marinade misses an easy chance to season and tenderize. And cooking it over gentle heat steams it gray, so use the hottest fire you have.

How to buy it

Ask for outside skirt if you can, as it is thicker and more tender than the inside. Look for a long, deep red steak with a visible coarse grain, trimmed of the tough membrane. It is more affordable than premium steaks but has crept up in price with its popularity. Grass-fed beef suits it well. Ask your butcher or use our Find a Farmer directory.

Good substitutes

Flank steak is the closest swap, similar in flavor and open grain and interchangeable in fajitas and stir-fries. Hanger steak gives similar bold flavor with more tenderness. Flat iron from the chuck is another affordable, flavorful grilling steak. All want the same hot cook and thin slice against the grain.

Storage and leftovers

Keep raw skirt well wrapped in the coldest part of the fridge and cook within three to five days, or freeze for several months. Cooked skirt is best eaten fresh, then sliced cold into tacos and salads, since reheating overcooks this thin cut. Marinated skirt can be prepped a day ahead and kept cold until you sear it.

Nutrition

Skirt steak is high in protein with moderate fat and big flavor, plus iron, zinc, and B vitamins. Grilling lets some fat drip away, and its bold flavor means modest portions satisfy. A citrus and herb marinade adds flavor without much fat, so a simple marinade and a pile of grilled vegetables keep the plate balanced.

Frequently asked questions

What is the difference between inside and outside skirt?

The outside skirt is thicker and more tender and the preferred cut. The inside skirt is thinner and chewier, though still flavorful.

Why is my skirt steak chewy?

Usually it was overcooked or sliced with the grain. Sear it hot and fast, keep it rosy, and slice thin across the coarse grain.

What is skirt steak best for?

Fajitas, carne asada, tacos, and stir-fries. Any dish where the beef is seared hot, sliced thin, and served with bold flavors.

Is skirt the same as flank?

They are similar, lean, flavorful, open-grained cuts and often interchangeable, but skirt is the diaphragm from the plate and flank is from the abdominal wall.

What to serve with it

Skirt steak wants tortillas, grilled peppers and onions, fresh salsa, and lime for fajitas and tacos. Over a rice bowl or salad, pair it with beans, avocado, and a punchy dressing. Something bright and acidic balances the intense beef flavor, and a cold beer or a medium red suits it.

A note on marinades

Skirt steak and marinades were made for each other. Its loose, open grain acts like a sponge, soaking up a marinade faster and deeper than a dense steak would, which is why even a short soak makes a real difference. A classic carne asada mix of lime, garlic, cumin, and chili, or a simple blend of soy, garlic, and a little sugar, both work beautifully. Thirty minutes helps, a couple of hours is better, but avoid going much past four hours in a very acidic marinade, since the acid can start to break down the surface into mush. Pat the steak dry before it hits the pan or grill so it sears rather than steams, and save a little marinade to brush on at the end.

Learn more

Back to the beef plate guide and the Beef Meat Wiki. For the tender bistro cut, see the hanger steak, or find good beef through Find a Farmer.