Black Panther is based in Wakanda which is a fictional country on the continent of Africa. Also, there are some AMAZING African dishes. By mix, they probably mean a variety of different dishes. Some American cuisine (aka for kids) and more adventurous food for the adults.
Completely agree that African food can be amazing! I am the least adventurous eater out there (with allergies too) and I have loved eating on cruises, they really make sure there is something for everyone (I even had an amazing meal at Remy despite my allergies and pickiness). My husband is much more adventurous and really wanted to try an Ethiopian restaurant in Atlanta - while I was nervous about liking the food is was beyond spectacular and is now one of our go to places. Definitely outside my comfort zone but well worth it. (Shout out to Desta Ethiopian Kitchen in Atlanta if anyone is local to me!).