Tucker's Tavern Deep Fried Stuffed Burgers

Long gone but still remembered. Shortly before Katrina Tucker's Tavern relocated to Magazine street from it's South Roman location (between Poydras and Tulane.)

Home of the deep-fried stuffed burger. Curious if anyone knows how these were made?

For those who don't know: basically it was two thin patties that had stuffing (cheese, bacon, mushrooms, etc) between them. The edges were pinched together to seal the stuffing inside. The outside was dripping in a thin gritty batter/breading (cornmeal maybe, but it was dark in color) and deep fried. This deep fried patty was then served and dressed on a bun like any other hamburger, with a variety of toppings.

My question: does anyone know the method for doing this? Were the stuffed raw hamburger pockets entirely cooked on a griddle before later being breaded and deep fried to order? Deep frying a raw hamburger pocket seems like it would soak up too much grease. Does anyone know what they used as batter?