He's probably talking about baked Mac N Cheese...thats more southern/soul food, etc, then the traditional stove top mac and cheese.
Baked Mac and Cheese is served for special events...and I would know, cause my aunties make it all the time. I think its more of a southern
thing then a racial thing. But yes, black people, as well as all people, LOVE baked Mac and Cheese. And I'm black and NOT offended at all.