This is a recipe published by UGA, and it is the best I have ever tasted. Labor intensive, it basically takes two days to prepare.
The recipe comes from this pamphlet which I used a resource for many, many large BBQ. Has all the info you will even need on quantities, portion control, and recipes.
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=2ahUKEwiYu4y5pKDgAhUGPN8KHWy7BWIQFjAAegQIChAC&url=https://athenaeum.libs.uga.edu/bitstream/handle/10724/12255/B1039.pdf?sequence=1&usg=AOvVaw35Uqjafr-1FrfKVTwlXjOL