Set aside the already boiled mixture of beans an maize.

Place a cooking skillet over heat and add vegetable cooking oil

Sweat chopped red onions in the skillet until browned

Add the boiled beans and maize in the skillet

Add tomato purée, salt and the beef stock. Allow simmering for roughly 10 mins.

When the stock reduces, switch off the heat and stir in some chopped coriander.