Submarine Crab: South Carolina's Cajun Sandwich with a Coastal Twist

What submarine crab is and where to find it

Submarine crab is a Cajun-style sandwich built on a long roll, stuffed with seasoned crab meat, and often topped with melted cheese, lettuce, tomato, and a remoulade or hot sauce. It borrows the submarine sandwich format—a hollowed-out roll packed with filling—but replaces the cold cuts with Gulf-style crab, bringing Louisiana's coastal cooking into a handheld form. In South Carolina, you'll find it at Cajun and Creole restaurants, seafood shacks, and casual spots that specialize in Low Country and Louisiana cuisine.

The sandwich reflects the overlap between South Carolina's own seafood tradition and the Cajun influence that has shaped the state's food culture. Charleston, Beaufort, and smaller coastal towns are your best bets for finding a well-made version, though some inland restaurants that focus on Cajun food also keep it on the menu. The quality depends heavily on the freshness of the crab and the balance of the seasoning—a good submarine crab should taste like the crab itself, not buried under sauce.

Key Takeaways

• Submarine crab is a Cajun sandwich made with seasoned crab meat on a long roll, typically topped with cheese, lettuce, tomato, and remoulade.
• South Carolina coastal restaurants and Cajun-focused spots are the most reliable places to order one, with Charleston and Beaufort offering the widest selection.
• The sandwich's quality depends on fresh crab meat and proper seasoning balance, so checking reviews or asking locals can help you find the best version.
• Submarine crab pairs well with sides like coleslaw, fries, or a cold drink, and is usually priced between $12 and $18 depending on the restaurant.

How submarine crab differs from other crab sandwiches

A submarine crab is distinct from a crab cake sandwich or a simple crab salad on bread. Where a crab cake sandwich features a formed, fried patty, submarine crab keeps the meat loose and chunky, bound lightly with mayo and spices rather than breadcrumbs and egg. The submarine format—a long roll split lengthwise and hollowed slightly—gives it more surface area for toppings and sauce than a round bun would.

The Cajun seasoning profile also sets it apart. You'll taste cayenne, paprika, garlic, and often a touch of hot sauce worked into the crab itself, rather than applied only as a condiment. This means the heat and flavor are distributed throughout the sandwich, not just on top. Some versions include a layer of melted cheddar or provolone, which adds richness and helps hold the filling together as you eat.

What to expect in the filling and toppings

The base is lump or backfin crab meat—the larger, sweeter pieces—mixed with mayo, mustard, Cajun spices, and sometimes a small amount of finely diced celery or onion. The goal is to let the crab flavor lead while the spices add depth and a gentle heat. Some restaurants add a touch of lemon juice or hot sauce to brighten it.

Toppings vary by restaurant but typically include shredded lettuce, sliced tomato, and a thick spread of remoulade—a Cajun mayo-based sauce with mustard, pickles, and spices. A few places add crispy bacon, avocado, or pickled jalapeños. Melted cheese is common but not universal; ask if you have a preference. The roll itself should be sturdy enough to hold everything without falling apart, but soft enough to bite through easily.

Where crab comes from and why it matters

South Carolina's crab supply comes from local waters and from the Gulf of Mexico. Local blue crab, harvested from the Atlantic and coastal sounds, has a slightly different flavor profile than Gulf crab—often a bit sweeter and less briny. Many restaurants use a mix or source seasonally, switching to Gulf crab in winter when local supplies are lower. The best submarine crab sandwiches are made with fresh meat, not frozen, which means the texture stays tender and the flavor stays clean.

When you order, it's worth asking where the crab comes from. A restaurant that can tell you—whether it's local, Gulf, or a specific supplier—is usually paying attention to quality. Crab meat is expensive, so places that cut corners often use less meat, more filler, or older stock. A good submarine crab should feel substantial and taste like crab first, seasoning second.

How to order and what to pair it with

Most restaurants serve submarine crab as a lunch or dinner entrée, and it's usually available year-round, though availability may vary seasonally. Order it as written first—the restaurant's version reflects their take on the classic. If you want modifications, ask; most places will adjust the heat level, hold the cheese, or add extra sauce without complaint.

Pair it with coleslaw (the cool, tangy contrast works well), French fries, or a simple green salad. A cold drink—iced tea, lemonade, or a light beer—balances the richness of the mayo and cheese. Some restaurants offer it as part of a combo with a side and drink, which can be a better value than ordering à la carte. If you're eating at a casual spot, expect to eat with your hands; bring napkins.

Restaurants and spots known for submarine crab

Charleston's seafood-focused restaurants and casual Cajun spots often feature submarine crab, though menus change and availability varies. Beaufort, with its strong Low Country seafood tradition, is another reliable area. Smaller coastal towns like Georgetown and Hilton Head also have restaurants that make versions worth seeking out. Your best approach is to search for "Cajun restaurant near me" or "crab sandwich" in your area and check recent reviews—diners often mention submarine crab specifically if it's a standout.

Food blogs and local dining guides focused on South Carolina also track which restaurants do Cajun food well. Asking locals at a visitor center or hotel desk can point you toward places that take their crab seriously. Because submarine crab isn't as famous as shrimp and grits or she-crab soup, a restaurant that makes it well often keeps quiet about it—word of mouth is usually how you find the best ones.

How submarine crab fits into Cajun and Low Country cooking

Submarine crab bridges two food traditions. It uses the Cajun approach to seasoning and sauce—bold spices, remoulade, the casual sandwich format—while working with seafood that's central to Low Country cooking. South Carolina's Cajun restaurants often adapt Louisiana recipes to local ingredients, and submarine crab is a natural fit: it takes a Cajun concept and fills it with crab that comes from South Carolina waters or the nearby Gulf.

The sandwich also reflects how casual, working-class food from Louisiana has become part of South Carolina's everyday dining. It's not fancy or formal; it's the kind of thing you grab for lunch or a quick dinner. That accessibility, combined with bold flavor, is part of what makes Cajun food appealing in the Low Country. A submarine crab is comfort food that tastes like it has something to say.

Frequently Asked Questions

Is submarine crab the same as a po'boy with crab?

Not quite. A po'boy is traditionally made with fried seafood (shrimp, oysters, or fish) on a French-style roll. Submarine crab uses unfried crab meat and a different roll shape—longer and more hollowed out. The seasoning and sauce profiles can overlap, but submarine crab is its own sandwich, not a variation of a po'boy.

Can I make submarine crab at home?

Yes. Buy fresh or high-quality frozen lump crab meat, mix it with mayo, mustard, cayenne, paprika, garlic powder, and a pinch of salt. Spread it on a long roll (a hoagie or sub roll works), top with lettuce, tomato, and remoulade, and add cheese if you like. The key is using good crab and not overmixing the filling, which can break up the meat.

What if I don't like spicy food?

Ask the restaurant to go light on the Cajun spices or skip the hot sauce. Most places will make it milder without complaint. You'll still get the crab flavor and the remoulade, which adds richness without much heat. Some restaurants also offer a non-spicy version on the menu.

How much does submarine crab usually cost?

Prices vary by restaurant and location, but expect to pay between $12 and $18 for a sandwich. Combo meals with a side and drink may run $16 to $22. Prices are higher in Charleston and tourist areas, lower in smaller towns. Crab is an expensive ingredient, so a cheap submarine crab often means less meat or lower quality.

Is submarine crab available year-round?

Most restaurants keep it on the menu year-round, though availability and sourcing may shift seasonally. Local crab is most abundant in warmer months; in winter, restaurants often switch to Gulf crab or frozen stock. Call ahead if you're traveling specifically to try one and want to make sure it's available.