A New Orleans Johnny po’ boy is a hearty oyster sandwich: crisp fried oysters tucked into soft French bread with lettuce, tomato, pickles, and a tangy remoulade. This home-style version keeps the oysters crunchy and the toppings cool, with a classic dressed-to-order finish.
Ingredients
- 1 lb (450 g) shucked oysters, drained, with 2 tablespoons (30 ml) liquor reserved if available
- 1 cup (240 ml) buttermilk
- 1 cup (125 g) fine yellow cornmeal
- ½ cup (60 g) all-purpose flour
- 1 teaspoon (3 g) garlic powder
- 1 teaspoon (3 g) paprika
- ½ teaspoon (1 g) cayenne pepper, or to taste
- 1 teaspoon (6 g) fine salt, divided
- ½ teaspoon (1 g) black pepper
- 4 cups (950 ml) neutral oil, such as canola or peanut oil, for frying; use enough for a 1½-inch (4 cm) depth in your pot
- 4 small French sandwich loaves, about 8 inches (20 cm) each, or 2 larger loaves cut into four portions
- ½ cup (115 g) mayonnaise
- 1 tablespoon (15 ml) Creole or whole-grain mustard
- 1 tablespoon (15 ml) lemon juice
- 1 teaspoon (5 ml) hot sauce, plus more to serve
- 1 teaspoon (5 ml) Worcestershire sauce
- 2 cups (70 g) shredded iceberg lettuce
- 1 medium tomato, about 6 oz (170 g), thinly sliced
- ½ cup (75 g) dill pickle slices
- 1 tablespoon (15 ml) chopped fresh parsley (optional)
Instructions
- Make the remoulade. In a small bowl, stir together the mayonnaise, mustard, lemon juice, hot sauce, Worcestershire, parsley if using, and the reserved oyster liquor if you have it. Cover and refrigerate while you prepare the rest. If you do not have oyster liquor, the sauce is still flavorful without it.
- Prepare the oysters and coating. Pat the drained oysters dry with paper towels. Pour the buttermilk into a shallow bowl. In a second shallow bowl, mix the cornmeal, flour, garlic powder, paprika, cayenne, ½ teaspoon (3 g) of the salt, and black pepper. Dip each oyster in buttermilk, let excess drip away, then coat thoroughly in the cornmeal mixture. Set coated oysters on a rack or plate in a single layer; do not stack them.
- Heat the oil and bread. Pour oil into a heavy pot to a depth of about 1½ inches (4 cm), leaving plenty of room at the top. Heat over medium to medium-high until it reaches 350°F (175°C) on a deep-fry thermometer. Meanwhile, split the loaves lengthwise without cutting all the way through. Warm them briefly in a 300°F (150°C) oven for 4–5 minutes, or leave them at room temperature if they are fresh and soft.
- Fry in batches. Lower oysters carefully into the oil in batches, leaving room between pieces. Fry for about 2–3 minutes, turning once if needed, until the coating is golden and crisp. Avoid crowding, which drops the oil temperature and makes the crust greasy. Lift the oysters out with a slotted spoon and drain on a wire rack set over a tray; season lightly with the remaining ½ teaspoon (3 g) salt. Check the thickest oyster with a food thermometer: the USDA FSIS safe minimum internal temperature for fish and shellfish is 145°F (63°C). Return under-temperature oysters to the hot oil and cook briefly, then check again. Allow the oil to return to 350°F (175°C) between batches.
- Dress and assemble. Spread remoulade inside each loaf. Add lettuce, tomato, and pickles, then divide the hot oysters among the sandwiches. Add extra hot sauce if desired and serve right away, while the coating is crisp.
Tips
- Buy fresh, shucked oysters from a reputable seafood counter and keep them cold until you cook. Drain them well and pat dry; excess liquid makes the coating slide off and can cause oil to splatter.
- If oysters are unavailable, use peeled shrimp of similar size. Coat and fry them the same way, but cook until opaque and 145°F (63°C) internally; cooking time will depend on their size.
- Fine yellow cornmeal gives a traditional, even crust. Coarse cornmeal works but makes a more textured coating. For less heat, reduce or omit the cayenne and let people add hot sauce at the table.
- Use a thermometer for the oil and avoid filling the pot more than halfway. Lower food gently into the oil, keep children away from the stove, and never leave hot oil unattended.
Serving Suggestions
Serve the sandwiches immediately with French fries, kettle-style potato chips, or a simple green salad. A side of coleslaw adds crunch and balances the rich fried oysters. Offer lemon wedges, extra pickles, and hot sauce so everyone can adjust the tang and heat. For a classic dressed po’ boy, keep the lettuce, tomato, and pickles generous but add them just before serving so the bread does not become soggy.
Variations
For a lighter crust, use all-purpose flour in place of the cornmeal, though the result will be less crunchy and less characteristically Southern. Add a teaspoon of Creole seasoning to the dry coating, adjusting the added salt because many blends are already salty. To make the remoulade more assertive, add a little finely chopped celery or a pinch of cayenne. A shrimp po’ boy uses the same bread and toppings; fry peeled shrimp in batches until opaque and safely cooked. The name “Johnny” is used for oyster po’ boy variations, but sandwich names and dressings vary among New Orleans cooks and shops.
Storage and Reheating
For best texture, assemble only the sandwiches you will eat right away. Refrigerate cooked oysters and remoulade separately within 2 hours; store the oysters in a covered container for up to 3–4 days and the sauce for up to 3 days. Keep lettuce, tomato, pickles, and bread separate. Do not leave seafood or mayonnaise-based sauce at room temperature for more than 2 hours, or 1 hour when the temperature is above 90°F (32°C).
Reheat oysters in a 375°F (190°C) oven or air fryer for about 5–8 minutes, turning once, until hot and crisp; check that leftovers reach 165°F (74°C). Avoid the microwave if you want to preserve the crust. Do not refry cold oysters in a large pot of oil, since moisture can cause dangerous splattering. Discard oysters that smell off or have been stored too long.
Frequently Asked Questions
What is a Johnny po’ boy?
A Johnny po’ boy is a New Orleans-style oyster sandwich, typically served on French bread with lettuce, tomato, pickles, and a sauce such as remoulade. The exact toppings and name can differ from one local version to another.
Can I use frozen oysters?
Yes, if they are sold for cooking. Thaw them in the refrigerator, drain thoroughly, and pat dry before breading. Freezing and thawing can soften oysters, so handle them gently and expect a slightly less plump texture.
How do I keep the oysters crispy?
Dry them well, fry in small batches at a steady 350°F (175°C), and drain on a wire rack rather than paper towels. Assemble the sandwiches just before eating, since sauce and vegetable juices soften the coating over time.
Can I make the remoulade ahead?
Yes. Mix it up to 2 days ahead and refrigerate it in a covered container. Stir before serving, and keep it chilled while the oysters fry.
Can I make this without a deep fryer?
Yes. A heavy Dutch oven or deep, sturdy saucepan works well. Use a thermometer to monitor the oil, fry in batches, and leave plenty of space at the top to prevent bubbling oil from overflowing.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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