Peel and wash the yam. Cut it into small pieces and put it in a pot.
Cover the yam with enough water to cover it by about an inch.
Bring the water to a boil and cook the yam until it is very soft and can be easily mashed with a fork or a potato masher.
Drain the yam and transfer it to a large mortar or a large bowl.
Begin to pound the yam using a pestle or a wooden spoon until it becomes smooth and stretchy. This can take some time and effort, so be prepared to work your arms.
Once the yam is smooth and stretchy, it is ready to be served. It is usually served with a soup or stew on top of it. Enjoy it with this Egusi soup recipe https://recipesbytarah.com/egusi-soup/