Soak and wash the beans to remove all the back.

After thoroughly washed,soak again at least 5mins.
Drain the water and grind the beans by adding pepper and onion.

After grinding the beans add Luke warm water stir and add oil seasoning and spices.
(Soak the seasoning cube b4 adding to avoid one side salty and the other side not tasty at all).

Mix all together,pour the mixture in the leather or moi moi contain and boil in boiling water till done.

For the sauce.
In a pan add little oil slice a lot of union and add to the pan spice it with ginger and garlic stir well and add grated pepper stir it and season with salt and seasoning cube stir all together and cover for 2mins in low flame.

After 2 mins add parboiled dice cube potatoes add 2-3tblsp of water stir and cover for 3mins.

Walah....!here u have moi moi with potatoes sauce.

You may add lot of thing in the moi moi mixture like egg,fish,kidney,meat and even spinach(alaiyahu).
But if u want it plain that will go well with the sauce.