Heat the oil in a deep-fryer to 360°F or in a heavy iron dutch oven, or similar.
In a small bowl, whisk the buttermilk, egg, and hot sauce to combine. In a second bowl, combine the flour, cornmeal, cayenne, granulated garlic, the 1 tablespoon salt, and the black pepper.
Working in batches, dredge the okra first in the buttermilk mixture, allowing any excess to drip off, then in the flour mixture. Shake to remove any extra breading. Repeat until all of the okra is breaded.
Fry the okra, in batches, in the hot oil, turning it as necessary, until lightly golden, about 5 minutes. Transfer the fried okra to paper towels to drain, and season lightly with salt. Repeat with the remaining okra.
Serve the okra hot, with the Creamy Buttermilk Dip on the side for dipping.