Po’ Boy Sandwich
A classic Louisiana shrimp po’ boy built on crusty French bread and stuffed generously with crisp, well-seasoned fried shrimp, shredded lettuce, tomato, pickle slices, and a tangy remoulade. Marinating the shrimp briefly in buttermilk and egg before dredging is the technique that gives the coating something genuine to grip — a wet shrimp surface with nothing to bond to produces a coating that slides or falls away in the fryer, the same wet-marinade-before-dredge principle used elsewhere in this collection whenever a delicate protein needs its coating to actually adhere. Combining flour, cornmeal, and cornstarch in the dredge, rather than flour alone, is what gives the shrimp their specific southern crunch — cornmeal for texture, cornstarch for lightness, flour for body. Resting the breaded shrimp briefly before frying protects that coating further, letting it set before the shock of hot oil. The payoff is a sandwich genuinely overfilled in the classic po’ boy style, with crisp, light shrimp against bold, tangy remoulade and crisp fresh vegetables inside sturdy but yielding French bread.
Prep Time : 30 min
Cook Time : 20 min
Servings : 4
30 min
20 min
4
Ingredients
For the Bread
• 2 classic French baguettes, each cut into 2 sandwich lengths, or 4 semi-baguette rolls — or homemade bread from Classic French Baguette or Ciabatta Rolls / Semi-Baguettes
For the Shrimp
• 700g raw shrimp, peeled and deveined, tails removed
• 5g fine sea salt
• 2g freshly ground black pepper
• 3g garlic powder — this one on Amazon
• 3g onion powder — this one on Amazon
• 2g smoked paprika or sweet paprika — this one on Amazon
• 120ml buttermilk
• 1 large egg
• 150g all-purpose flour — this one on Amazon
• 70g fine cornmeal — this one on Amazon
• 20g cornstarch
• 5g baking powder
• Neutral frying oil, as needed
For the Remoulade
• 120g mayonnaise
• 10g Dijon mustard — this one on Amazon
• 10g whole grain mustard or Creole mustard if available
• 10ml lemon juice
• 5ml hot sauce
• 1 small garlic clove, very finely grated or minced
• 10g finely diced cornichons or pickles
• 5g capers, finely chopped (optional but classic in character)
• 1 tbsp finely chopped parsley
• 1 tsp paprika — this one on Amazon
• Fine sea salt, to taste
• Freshly ground black pepper, to taste
For the Sandwich Assembly
• 120–150g shredded iceberg lettuce
• 2 medium tomatoes, sliced into thin rounds
• 16–20 pickle slices
• Softened butter or a little mayo for the bread, optional
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Directions
- Prepare the Remoulade
In a small bowl, combine the mayonnaise, Dijon mustard, whole grain or Creole mustard, lemon juice, hot sauce, garlic, diced pickles, capers if using, parsley, and paprika. Mix until fully combined. Season with salt and black pepper to taste. Refrigerate until needed so the flavor can settle while the rest of the sandwich is prepared. The finished sauce should taste tangy, slightly sharp, lightly spicy, and rich enough to coat the bread without running like a thin dressing. Combining two different mustards rather than one gives the remoulade layered sharpness — Dijon’s smoothness alongside the whole grain or Creole mustard’s coarser, more assertive bite, which together produce more complexity than either would alone. - Prepare the Shrimp
Pat the shrimp dry. Place them in a bowl and season with the salt, black pepper, garlic powder, onion powder, and paprika. Add the buttermilk and egg, then mix until the shrimp are evenly coated. Let them sit for 15 minutes. This short marination lightly seasons the shrimp throughout and gives the coating something to cling to. The shrimp should be coated but not swimming in a large excess of liquid. This brief marinade is calibrated specifically for shrimp’s fast-cooking, delicate nature — long enough to season the surface and coat it for the dredge, but well short of any window where the buttermilk’s mild acidity would start affecting the shrimp’s texture. - Prepare the Dredge
In a shallow dish or tray, combine the flour, cornmeal, cornstarch, and baking powder. Mix very well so the dry ingredients are evenly distributed. The flour gives body, the cornmeal gives the po’ boy its more classic southern crunch, and the cornstarch helps keep the crust lighter and crisper. The finished mixture should look uniform with no visible streaks. This three-part dry mix is doing distinct work with each component — cornmeal alone would fry into something coarse and slightly gritty, while flour alone would produce a smoother but denser crust; combined with cornstarch for lightness, the blend produces the specific crunchy-but-light texture this style of fried shrimp is known for. - Bread the Shrimp
Lift the shrimp from the buttermilk mixture, letting the excess drip off, then toss them in the dredge until fully coated. Press the dredge lightly onto the shrimp so the coating adheres well. Place the breaded shrimp on a tray or rack and let them rest for 5–10 minutes before frying. This short rest helps the coating hydrate slightly and cling better in the oil rather than falling away. The buttermilk clinging to the shrimp’s surface gives the dry dredge something to bond with immediately — pressing it on lightly reinforces that bond, and the brief rest afterward lets it set fully before the coating meets hot oil. - Fry the Shrimp
Heat neutral oil in a deep pot or fryer to 175–180°C. Fry the shrimp in batches for about 2–3 minutes, depending on size, until deeply golden and crisp. Do not overcrowd the pot. Fry only until the coating is crisp and evenly golden, the shrimp have curled and turned opaque, and the interior is just cooked through. Transfer to a wire rack or paper towel-lined tray and season lightly with a little extra salt while hot. The shrimp should stay crisp and light, not dark or heavy. Overfrying will make them rubbery very quickly. Shrimp cook through remarkably fast given their small size, which is exactly why this fry is timed so briefly and why crowding the pot is worth avoiding — a dropped oil temperature from overcrowding extends the fry time just enough to push already-fast-cooking shrimp toward tough and rubbery. - Prepare the Bread
Split the baguette sections or semi-baguettes horizontally without cutting all the way through if you want a hinged sandwich. If the crumb is very dense, pull out a little of the interior to make room for the filling. If desired, toast the cut sides lightly until just warm and faintly crisp. A very light smear of butter or mayo on the bread is optional, but do not make the bread greasy. The bread should be sturdy enough to hold the filling, but not toasted so hard that it shatters when bitten. Removing a little of an overly dense interior crumb creates more room for the generous filling this sandwich calls for, without needing to compress or squeeze everything into a bread cavity that wasn’t built to hold it. - Assemble the Sandwiches
Spread a generous layer of remoulade on both the top and bottom interior sides of each roll. Layer the bottom half with a handful of shredded lettuce, tomato slices, pickle slices, and a generous portion of hot fried shrimp. Add a little extra remoulade over the shrimp if desired, then close with the top half of the bread. Each sandwich should look full and slightly overflowing, with the shrimp extending past the edges in the classic po’ boy style. Spreading remoulade on both halves of the bread, rather than just one side, ensures its tangy flavour reaches every bite rather than being concentrated only where the shrimp happens to sit.
*Notes :
- The buttermilk-and-egg marinade followed by a three-part dry dredge is worth understanding as a deliberate two-stage system rather than a single coating step. The wet marinade does double duty, seasoning the shrimp’s surface while also giving it a slightly tacky coating for the dry dredge to properly bond to. Skipping that wet stage and dredging dry shrimp directly would produce a noticeably patchier, less adherent coating, since there’s nothing for the dry ingredients to cling to on contact.
- The specific three-component dredge — flour, cornmeal, and cornstarch together — reflects a real understanding of what each ingredient contributes on its own. Cornmeal alone fries into something distinctly gritty and coarse; flour alone produces a smoother but comparatively heavier, denser crust. Cornstarch’s inclusion lightens the whole mixture, and the combination of all three is what produces the specific light-but-crunchy texture that reads as authentically southern rather than simply battered.
- Shrimp’s genuinely fast cooking time deserves real respect throughout this recipe, from the brief marinade through the short fry. Unlike a larger cut of fish or a piece of chicken, shrimp moves from raw to perfectly cooked to overdone and rubbery within a very narrow window — every timing instruction in this recipe, from the 15-minute marinade to the 2–3 minute fry, is calibrated specifically around not overshooting that window.
- The instruction to spread remoulade generously on both halves of the bread, rather than concentrating it in one place, reflects how central that sauce is to the sandwich’s identity. A po’ boy without a properly bold, tangy remoulade risks reading as simply a fried shrimp sandwich rather than something distinctly Louisiana — the sauce’s presence throughout every bite, not just where the shrimp happens to sit, is part of what makes the dish recognisable as a proper po’ boy.
Why This Recipe Works
This recipe works because the shrimp are protected through every stage of a fast-moving process: a brief wet marinade gives the dry dredge something to bond with, the three-part dredge itself is built for a specific light-crunchy texture, and both the marinating and frying times are kept genuinely short to avoid overcooking a protein that turns rubbery quickly.
The remoulade is built with layered sharpness from two mustards and spread generously on both halves of the bread so its flavour carries through the whole sandwich. Sturdy but not overly hard French bread holds the generous, classic po’ boy fill without collapsing or fighting the bite.
Ingredient Breakdown
Buttermilk-and-Egg Marinated Shrimp
The pre-dredge step — seasons the shrimp and gives the coating something to cling to, timed briefly to protect the shrimp’s delicate texture.
Flour-Cornmeal-Cornstarch Dredge
The coating composition — each component contributing body, crunch, or lightness, together producing the specific southern-style fried texture.
Briefly, Fast-Fried Shrimp
The critical timing — a short fry window respects how quickly shrimp moves from perfectly cooked to overdone and rubbery.
Two-Mustard Remoulade
The sauce’s foundation — Dijon and whole grain or Creole mustard together provide layered sharpness beyond what either offers alone.
Sturdy, Not-Overly-Crusty French Bread
The structural base — able to hold a generously overfilled sandwich without collapsing or shattering under the bite.
Flavor Structure Explained
This po’ boy sandwich follows a layered balance model:
- Crisp light foundation (fried shrimp)
- Bold tangy centre (remoulade)
- Fresh cool crunch (lettuce, tomato)
- Sharp briny accent (pickles)
- Sturdy neutral base (French bread)
The crisp, lightly fried shrimp defines the sandwich with clean, savoury flavour and genuine crunch that stays light rather than heavy. The remoulade layers in bold, tangy, mustard-forward sauce that carries through every bite of the sandwich. Fresh shredded lettuce and tomato add cool, crisp contrast against the hot shrimp, while sharp pickle slices contribute a briny accent. The sturdy but yielding French bread rounds out the whole sandwich with a neutral, structural base that holds everything together without competing for attention.
Common Mistakes to Avoid
- Skipping the Buttermilk-Egg Marinade – Dry shrimp dredged directly produce a patchy, poorly adhering coating. Always marinate briefly first.
- Using Flour Alone Instead of the Full Dredge Blend – This loses the specific light, crunchy texture that defines a proper po’ boy shrimp coating. Always combine flour, cornmeal, and cornstarch.
- Overcrowding the Frying Oil – This drops the temperature and extends the fry time, pushing already-fast-cooking shrimp toward rubbery. Always fry in properly sized batches.
- Overfrying the Shrimp – Shrimp move from perfectly cooked to tough within a narrow window. Always pull them as soon as they’re golden, curled, and opaque.
- Skimping on the Remoulade – A po’ boy without a properly bold, generous remoulade reads as just a fried shrimp sandwich. Always spread it generously on both halves of the bread.
Variations
Oyster Po’ Boy
Substitute fried oysters for the shrimp, following the identical marinade, dredge, and fry method, adjusting the fry time slightly for oyster size.
Spicier Version
Increase the hot sauce in the remoulade and add a pinch of cayenne to the dry dredge for a sharper heat throughout.
Catfish Po’ Boy
Substitute strips of catfish fillet for the shrimp, following the same coating and frying technique with a slightly longer fry time.
Dressed Extra
Add a few thin slices of avocado alongside the classic toppings for a creamier, richer version.
Storage & Make-Ahead
The remoulade can be made 1–2 days ahead and refrigerated in a sealed container, allowing the flavour to develop further.
Raw, marinated shrimp should be dredged and fried fresh rather than held marinated for an extended period.
Fried shrimp is best eaten immediately; it loses its crisp texture within an hour and does not reheat well, becoming soft rather than crisp.
Fully assembled sandwiches are not suitable for storage — assemble only what will be eaten immediately, given how quickly the bread softens under the shrimp and remoulade.
Frequently Asked Questions
Why does the shrimp need to marinate in buttermilk and egg before dredging?
This wet stage seasons the shrimp’s surface and leaves it slightly tacky, giving the dry dredge something to properly bond to. Dredging dry shrimp directly produces a noticeably patchier, less adherent coating.
Why combine flour, cornmeal, and cornstarch rather than using just one of them?
Each ingredient contributes something different — flour for body, cornmeal for the classic southern crunch, cornstarch for lightness. Using flour or cornmeal alone would produce either a heavier, denser crust or something coarser and grittier than the combination achieves.
Why is the frying time kept so short?
Shrimp cook through remarkably fast given their small size, moving from perfectly done to tough and rubbery within a narrow window. The brief 2–3 minute fry, along with avoiding overcrowded batches, is calibrated specifically to catch them at their ideal texture.
Why does the remoulade need to go on both halves of the bread instead of just one side?
This sauce is central to what makes the sandwich read as a proper po’ boy rather than simply a fried shrimp sandwich. Spreading it on both halves ensures its bold, tangy flavour carries through every bite, not just where the shrimp sits.
Are there other fried seafood sandwiches or sides worth trying?
Lobster Roll (Connecticut Style) and Crispy Fish Sandwich both offer different takes on a seafood-forward sandwich worth exploring. Deep Fried Calamari with Italian marinara makes a great starter alongside this po’ boy. For a different kind of loaded sandwich entirely, Chopped Cheese is also worth trying.
Nutrition Facts
( per serving )
Calories
~720 kcal
Protein
38 g
Fat
32 g
Carbs
68 g
Calories
~720 kcal
Protein
38 g
Fat
32 g
Carbs
68 g
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Po’ Boy Sandwich
Ingredients
Method
- In a small bowl, combine the mayonnaise, Dijon mustard, whole grain or Creole mustard, lemon juice, hot sauce, garlic, diced pickles, capers if using, parsley, and paprika. Mix until fully combined. Season with salt and black pepper to taste. Refrigerate until needed so the flavor can settle while the rest of the sandwich is prepared. The finished sauce should taste tangy, slightly sharp, lightly spicy, and rich enough to coat the bread without running like a thin dressing. Combining two different mustards rather than one gives the remoulade layered sharpness — Dijon’s smoothness alongside the whole grain or Creole mustard’s coarser, more assertive bite, which together produce more complexity than either would alone.
- Pat the shrimp dry. Place them in a bowl and season with the salt, black pepper, garlic powder, onion powder, and paprika. Add the buttermilk and egg, then mix until the shrimp are evenly coated. Let them sit for 15 minutes. This short marination lightly seasons the shrimp throughout and gives the coating something to cling to. The shrimp should be coated but not swimming in a large excess of liquid. This brief marinade is calibrated specifically for shrimp’s fast-cooking, delicate nature — long enough to season the surface and coat it for the dredge, but well short of any window where the buttermilk’s mild acidity would start affecting the shrimp’s texture.
- In a shallow dish or tray, combine the flour, cornmeal, cornstarch, and baking powder. Mix very well so the dry ingredients are evenly distributed. The flour gives body, the cornmeal gives the po’ boy its more classic southern crunch, and the cornstarch helps keep the crust lighter and crisper. The finished mixture should look uniform with no visible streaks. This three-part dry mix is doing distinct work with each component — cornmeal alone would fry into something coarse and slightly gritty, while flour alone would produce a smoother but denser crust; combined with cornstarch for lightness, the blend produces the specific crunchy-but-light texture this style of fried shrimp is known for.
- Lift the shrimp from the buttermilk mixture, letting the excess drip off, then toss them in the dredge until fully coated. Press the dredge lightly onto the shrimp so the coating adheres well. Place the breaded shrimp on a tray or rack and let them rest for 5–10 minutes before frying. This short rest helps the coating hydrate slightly and cling better in the oil rather than falling away. The buttermilk clinging to the shrimp’s surface gives the dry dredge something to bond with immediately — pressing it on lightly reinforces that bond, and the brief rest afterward lets it set fully before the coating meets hot oil.
- Heat neutral oil in a deep pot or fryer to 175–180°C. Fry the shrimp in batches for about 2–3 minutes, depending on size, until deeply golden and crisp. Do not overcrowd the pot. Fry only until the coating is crisp and evenly golden, the shrimp have curled and turned opaque, and the interior is just cooked through. Transfer to a wire rack or paper towel-lined tray and season lightly with a little extra salt while hot. The shrimp should stay crisp and light, not dark or heavy. Overfrying will make them rubbery very quickly. Shrimp cook through remarkably fast given their small size, which is exactly why this fry is timed so briefly and why crowding the pot is worth avoiding — a dropped oil temperature from overcrowding extends the fry time just enough to push already-fast-cooking shrimp toward tough and rubbery.
- Split the baguette sections or semi-baguettes horizontally without cutting all the way through if you want a hinged sandwich. If the crumb is very dense, pull out a little of the interior to make room for the filling. If desired, toast the cut sides lightly until just warm and faintly crisp. A very light smear of butter or mayo on the bread is optional, but do not make the bread greasy. The bread should be sturdy enough to hold the filling, but not toasted so hard that it shatters when bitten. Removing a little of an overly dense interior crumb creates more room for the generous filling this sandwich calls for, without needing to compress or squeeze everything into a bread cavity that wasn’t built to hold it.
- Spread a generous layer of remoulade on both the top and bottom interior sides of each roll. Layer the bottom half with a handful of shredded lettuce, tomato slices, pickle slices, and a generous portion of hot fried shrimp. Add a little extra remoulade over the shrimp if desired, then close with the top half of the bread. Each sandwich should look full and slightly overflowing, with the shrimp extending past the edges in the classic po’ boy style. Spreading remoulade on both halves of the bread, rather than just one side, ensures its tangy flavour reaches every bite rather than being concentrated only where the shrimp happens to sit.