Grate cassava into a bowl, getting the product as fine as your grater allows but not super fine.
Squeeze out as much of the moisture as possible.
Once the water is out, the dough needs to be sieved. This is typically done using an agbadze (like a winnowing basket but larger gaps) but a sieve with larger holes than usual will do.
Season the sifted flour with salt and onion.
Form medium-sized balls from the flour paying extra attention not to squeeze them too firmly, they need room as they are being fried.
Over medium-high heat, place the balls into the oil.
Once in the oil, fry for about 1 minute, and then lower the heat.
Fry them until they are golden brown. This should take about 7 minutes approximately.
This snack is best eaten fresh out of the oil and on the same day.