In a pot, bring 2 cups of clean water to a rolling boil. Adjust the heat to maintain a steady boil.
If you are using fresh yam, peel, wash and cut the yam into even-sized chunks. Place the yam chunks in a separate pot of boiling water and cook on medium heat until they become tender and easily pierced with a fork. Drain the excess water.
If you are using yam flour, slowly add the flour to the 2 cups of boiling water while stirring with a wooden spoon. If you are using cooked yam chunks, blend the yam chunks in a food processor with a minimal amount of water until smooth and dough-like in consistency. Gradually add the yam mixture to the 2 cups of boiling water, stirring continuously.
Keep stirring the mixture on medium heat until it thickens and forms a smooth, dough-like consistency. If necessary, add an extra 10ml of water gradually while mixing to achieve the desired consistency.
The texture should be elastic and stretchy without any lumps. Continue stirring until you achieve this consistency.
Turn off the heat and transfer your pounded yam to a plate.