I'm not arguing for what is a majority. I'm talking about the large portions of Africa that still live in a hunter-gatherer situations in mud huts.
Cultures: https://en.wikipedia.org/wiki/Linear_Pottery_culture & https://en.wikipedia.org/wiki/Yamnaya_culture & https://en.wikipedia.org/wiki/Corded_Ware_culture & https://en.wikipedia.org/wiki/Romani_people
Civilizations: https://en.wikipedia.org/wiki/Kingdom_of_Great_Zimbabwe & https://en.wikipedia.org/wiki/Mali_Empire & https://en.wikipedia.org/wiki/Indus_Valley_Civilisation & https://en.wikipedia.org/wiki/Aztecs
The reason we're talking about the recipe is because it's one of the oldest recorded recipes, which is because they had writing.
That's interesting, because I don't really think of a "culture" as smaller than a "civilization". I think of a culture being a necessary thread that runs through a civilization and without which there are no civilizations.
I'm sure those relatively voiceless cultures will appreciate your minimization of their contribution to the peoples of Africa.
As for mud huts, still commonly used in some places; there’s nothing particularly wrong with mud/earth construction if it works in your local climate.