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1
Preheat the oven to 350 degrees F.
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2
To make the Spicy Tartar Sauce: Mix all the sauce ingredients in a small bowl until well combined.
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3
Cover and refrigerate until ready to serve.
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4
In a deep 12-inch pan set over medium-high heat, add enough oil so it comes 1/3 of the way up the sides.
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5
Heat the oil to 375 degrees F.
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6
In a wide-mouth bowl, whisk the eggs with the hot sauce, seafood seasoning and a pinch of salt.
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7
In a small paper bag, mix together the cornmeal, flour, cornstarch, and salt and pepper, to taste.
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8
Dredge the catfish in egg mixture, then in the flour mixture.
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9
Gently shake off excess flour.
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10
Set aside and repeat with remaining flounder.
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11
Fry the fish in batches until golden, about 2 to 3 minutes each side, being careful to keep the temperature at 375 degrees F. Remove catfish to a paper towel to drain and immediately season with salt.
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12
Slice the sandwich rolls in half, slather the cut sides with butter and season with salt.
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13
Arrange, cut side up, on a baking sheet and toast in the oven until lightly golden, about 8 minutes.
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14
An alternate is to put them, buttered side down, on a griddle or under a broiler, and toast until golden.
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15
Set aside.
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16
To assemble sandwiches, slather the rolls with the Spicy Tartar Sauce, top with lettuce and catfish, and serve.