Soak diced beef in ample cool water overnight to remove the salt. Drain, rinse, and set aside.
Bring 12 cups of water to a boil over high heat. Add salt and pepper to taste, then add okra. Reduce heat to medium, and simmer for 20 minutes. Stir in beef, shrimp, and cod; simmer fro 10 minutes more. Season with chopped basil and lemon juice before serving.
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