The Makueni farm is over 1,000 acres and it featured a river and hills and dust tracks that led to a smattering of dwellings and sheds, including special sheds set aside for lactating goat mothers ...

Just one tablespoon of river reed salt costs about $1 in Kenya. Compare that to the 4 cents it costs locals for the same amount of sea salt. So how do producers make salt from river reeds?