up in soweto. all ran to the central part of the city. >> with the end of apartheid and emergence of mandela, south africa became a beacon and a refuge for millions of africans from all over the continent. black south africans fought hard for their freedom and their country. as i understand, a lot of them are pretty pissed off about we're just getting our -- together and all these congolese and nigerians are coming here. >> sanza has no formal culinary training. he's completely self-taught. picking up bits and pieces where he can. often from the women in the neighborhood. >> you're plucking the best of everybody in the culture. >> every day. every day i learn. what are you eating? where are you from? i've been taught by some men. that's not how it's cooked at home, you know? go to that auntie. to the back of some dingy cab. there's a small kitchen. look, there, it'll be nice. she'll teach you something and then that is me. hey, auntie, you know, i'm really keen on knowing how you make your particul

york. >> how many taxis do you have in soweto?ger means soweto. also this and this. johannesburg has an elaborate system of hand signals indicating desired routes of travel. >> you're looking at the hand signals and say i'm not going there, i'm not going there? >> i'm looking at hand signals. >> in 1904, soweto came into being as a less denied version of workers lodging. it was designed as lodging. a place to put black laborers comfortably removed from white society. a ghetto. by the 1950s, it had become the center of resistance to white rule. synonymous with the struggle against the whole rotten racist system. >> i remember a day. my mother had to hide me there under the bed. >> now there is a definite cache to living in soweto. a very real pride back at being in the center of things back when it was hard and dangerous to have an opinion. nelson mandela lived here. desmond tutu. when you're of certain age and you say you were born and bred in soweto, it means something. do mostly people own their homes or do they rent? >> mostly

the inefficiency of putting animals in places and feeding them lots of soweto and corn and they need and we think we can be more affordable. future, weot in the are 48% more cost-effective than the conventional egg. >> what you are hoping for in the future where china makes 38% of the eggs? what you are hope to do is feed the world with a less carbon footprint, healthier, and also it is cheaper? that means that people do not have to worry about their next meal and get the protein they need. a we can bring farmers into new economy. with a grateful to receive a large amount of support. they ask, what are you growing? i want to grow it. are you ready to see? >> i do not think it is working. i am sorry. this a technical difficulty. this the scramble egg. it is not hot enough. can leave it -- we for you. you can make french toast. we will leave the mayo. >> i am a big mayonnaise fan. i am told it tastes very similar. >> it is beating the best mayonnaise brand. the market for mayonnaise is $11 billion globally. think about that. we can take the chicken egg out and put our plant-based produ