Gather all your ingredients
Peel the potatoes and clean them.
Boil with water.

Add in Githeri and continue boiling until potatoes are cooked.

If the food have excess water, strain it in a clean bowl and preserve it cause you might use it later.
Start mashing until everything is incorporated and all potatoes is completely mashed.

As you mash, chop onions and fry in enough oil.

Serve as desired.
Goes well with any stew.