In a small bowl, whisk together the vinegar, salt, pepper, parsley, and garlic. Drizzle in the olive oil in a thin stream, whisking constantly, until it is completely emulsified. Stir in the onion and Tabasco.
In a large saucepan, bring a generous amount of water to the boil. Plunge in the okra and cook for 3 minutes. Drain and pat dry with paper towels.
In a large heavy skillet, heat the olive oil over medium-high heat. Toss in the okra and sear it, tossing frequently, for about 1 1/2 minutes, or until golden. Set aside for 5 minutes to cool.
Arrange the lettuce leaves in a large serving bowl and scatter the okra on top. Pour the dressing over, toss together and scatter the red pepper julienne on top.
c.1997, M.S. Milliken & S. Feniger, all rights reserved