Cocoyam (taro) substitutes

Traditional Nigerian ground-seed thickening powders, the standard swap when cocoyam is being used to thicken soup rather than eaten.

Best for

bitter leaf soup (ofe onugbu), oha soup, nsala soup, egusi soup

This is what most Igbo cooks reach for when there is no cocoyam, and it is a clean swap because both thicken smoothly without adding much flavour. The difference is subtle but real: pounded cocoyam leaves a faint earthy sweetness and a slightly heavier, more velvety body, while achi is neutral and glossier. Sprinkle it in gradually with the soup simmering, never all at once, or it lumps.

Dried, milled cocoyam sold in African grocers, the same ingredient with the boiling and pounding already done.

Best for

bitter leaf soup, oha soup, thickening any Nigerian soup

The most faithful shortcut, because it is literally the same plant and gives the same flavour and body. It skips the forty minutes of boiling and the pounding, which is the whole point. Mix it into a little warm water first to a smooth slurry and add it in a stream; dry powder onto hot soup will seize into lumps you cannot break up later.

An ordinary waxy or all-purpose potato, the most available substitute anywhere.

Best for

boiled starchy sides, stews and soups with chunks of root, porridge, curries

Fine as the starch in a dish and imperfect as a texture match. Cocoyam is denser with a slightly slippery, almost gluey quality on the tongue; potato is drier and fluffier and starts breaking down sooner, so add it later to a stew. Flavour is the bigger gap, since cocoyam is nuttier and sweeter than potato in a way you will notice on a plainly boiled plate but not inside a heavily spiced stew.

The long brown-skinned tropical root sold as cassava, yuca or manioc, usually stocked in the same shops and freezers as cocoyam.

Best for

stews, boiled sides, pepper soup, fried chunks

Similarly dense and it holds its shape as well as cocoyam does, so a stew looks and behaves right. Cassava is waxier and more distinctly chewy, with none of cocoyam's slipperiness, and it has a tough central fibre to cut out. Like cocoyam it must be fully cooked, never eaten raw. Frozen cassava chunks are an easy, reliable version of this swap.

Smaller close relatives of taro, sold in Caribbean, Latin and Asian grocers as eddoe, malanga or yautia.

Best for

any cocoyam use, including thickening soup, boiled sides, stews

Effectively the same ingredient in a different size, and in many shops the labelling is used interchangeably. Eddoes are smaller and firmer with slightly more of a mucilaginous quality; malanga is a touch nuttier and drier. Either will boil and pound into a soup thickener exactly the way cocoyam does, which no other substitute on this list can claim. Both also need thorough cooking.

Dried potato flakes used purely as an emergency smooth thickener for an Igbo soup.

Best for

emergency thickening of bitter leaf or oha soup, rescuing a soup that came out thin

This is the least-bad option rather than a good one. The flakes dissolve smoothly and give a body genuinely close to pounded cocoyam, which is why it works at all. What gives it away is a mealy, faintly buttery-dairy flavour, and many brands are seasoned with milk solids and salt, so buy the plainest one you can find. Start with one tablespoon whisked into hot stock and build up; it thickens fast and turns pasty if you overshoot.