The only supermarkets we've come across in Cape Town are Pick 'n Pay. Most of them, in our view (coming from Turkey, US and Canada), carry a very limited selection.
For example, there are no juices that are REALLY 100%. They all have some sort of preservatives and flavour additives. Same goes for everything in the store, except fresh produce. Choice of eggs (no organic) is limited. All yoghurts have a tonne of preservatives, antifungal, colourants, flavour additives, etc. As I was struggling to choose something to buy, I felt I was taking part in a science experiment instead of choosing food. Checking these chemicals online also showed that some of them were prohibited by EU and FDA to be used in food...
Thank you in advance for your help!