Set up an assembly line: Place flour on a plate. Pour buttermilk in a bowl. Combine panko bread crumbs, garlic, salt and cajun seasoning together on another plate.
Dredge the okra in the flour. Dip the the buttermilk, let excess drip off. Dredge okra in panko bread crumb mixture. Repeat until all okra is coated.
In a skillet over medium-high heat, heat 1/2 inch oil to 350 degrees. Once oil reaches temperature, fry orka, in batches if necessary until golden brown. About 2 minutes. Use a slotted spoon to transfer okra to a paper towel lined plate. Sprinkle with salt.
To make dipping sauce whisk together sour cream, mayonnaise and cajun seasoning. Season to taste with salt.
Serve okra with dipping sauce.
Notes
Frozen okra must be thawed first. Be sure to fry in batches to avoid over-crowding the pan. Nutrition information for estimation purposes only.