how are the okra prices in prague? here in brno it is now 150 per kg which is way too much. and we also had a terrible harvest at home for two years in a row so i cannot enjoy okra at the moment...
Besides to African foods, you can try larger Asian (Vietnamese) foods. It is best to go to the Sapa market "Tržnice Sapa", where you will find a lot of food that you cannot find in Czech stores, such as okra, plantains, plantain (fufu) flour, spices, etc.:-)
