Peel the yam and cut it into small cubes (2cm2) and leave it soaked in cold water.
Cut the onions, tomatoes chillis, and bell peppers into small pieces. Alternatively, blend it with a machine.
Add the cubed yam to a sizeable pot and add water to cover the yam.
Cook on medium to high heat for 15 mins.
Add the onions, tomatoes chillis, bell peppers, and the remaining ingredients
Stir to combine then re-cover the pot.
Continue boiling for 5 minutes then reduce to a simmer.
When the yam is soft, partly mash to aid thickening (do not mash all the yam soft, leave some lumpy).
Add salt to taste if needed and it’s ready to be served.