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recipe

Asaro: Nigerian Yam Porridge

White African yam simmered with red pepper, tomato and palm oil, then partly mashed into a thick porridge with tender chunks and optional fish.

AI editorial review: 2026-10-22

Researched recipe; not cooked or tested by Culinara.

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Ingredients and method

Ingredients

  • 2 pounds peeled white African yam (about 900 grams), cut into 1 1/2-inch chunks; buy extra to allow for the peel
  • 1 medium red bell pepper, stemmed, seeded and chopped
  • 1 large ripe tomato, roughly chopped
  • 1 medium onion, half chopped and half thinly sliced
  • 1/2 to 1 Scotch bonnet or habanero, stemmed; optional
  • 1/3 US cup food-grade unrefined red palm oil; not palm kernel oil
  • 2 US cups water (475 ml) to start, plus more as needed
  • 1 tablespoon ground Nigerian dried crayfish, optional; contains crustacean shellfish
  • 1/2 teaspoon fine salt, plus more to taste
  • 1 teaspoon bouillon powder, optional; check salt and allergen labels
  • One 5-ounce can fully cooked mackerel or salmon, drained and checked for bones, optional
  • 2 loosely packed US cups washed chopped spinach, optional

Method

  1. Choose food-grade white African yam labeled puna, white yam or Nigerian yam. Wash the outside before peeling. Cut a stable section on a board, remove the thick brown skin with a knife, and cut the pale flesh into chunks. Rinse well. This recipe is for true yam, not orange sweet potato or cassava.
  2. Blend the bell pepper, tomato, chopped half-onion and optional hot pepper to a coarse puree, using a few tablespoons from the measured water only if needed. Use a heavy 4-quart pot with a lid, a sturdy spoon and optionally a potato masher.
  3. Put the yam, pepper puree, remaining measured water, salt and optional bouillon in the pot. The combined liquid should come close to the top of the yam without drowning it. Add a little more water if needed. Bring to a gentle boil, then reduce the heat, cover and simmer for about 10 minutes.
  4. Stir in the red palm oil, sliced onion and optional crayfish. Keep the oil red; it is simmered in the porridge, not heated separately to smoke. Cover and cook gently, checking and stirring near the bottom, until a fork passes easily through the largest yam pieces. Begin checking after another 10 minutes and keep cooking if firm.
  5. If the pot becomes dry before the yam softens, add hot water a little at a time. Once tender, press roughly a third to half of the yam against the side of the pot with the spoon or use a masher lightly. Leave other chunks intact. Stir to blend the mashed yam into the liquid.
  6. Fold in the optional canned fish and spinach. Simmer for about 3–5 minutes, until the spinach is wilted and the fish is thoroughly hot, stirring gently so the remaining chunks hold together. If omitting both, give the thickened porridge a brief gentle simmer.
  7. Taste for salt and adjust the texture with small splashes of hot water if needed. It should be thick enough to spoon, with soft yam chunks suspended in sauce. Serve warm. Do not judge doneness from the orange color alone: every yam piece should be tender.
Orange yam porridge with partly mashed yam and soft chunks, without optional fish or spinach. AI-generated illustration.
AI-generated serving illustration, not a photograph of food cooked or tested by Culinara.
AI-generated illustration: Orange yam porridge with partly mashed yam and soft chunks, without optional fish or spinach. Texture, portion size and plating are illustrative rather than measured results.
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Image details

Proportional 1200×800 JPEG derivative of the original AI illustration; no crop.

Buy white African yam

Asaro is a Nigerian yam porridge associated especially with Yoruba cooking. White African yam has a rough brown exterior and pale, starchy flesh. In US stores the word “yam” may also appear on sweet potatoes; those are a different ingredient and will give a sweeter, softer result.

Ask an African or Caribbean grocer for white or puna yam. This formulation uses a peeled weight so cooks do not have to guess the size of a “medium tuber.” Do not substitute cassava, yam flour or instant pounded-yam mix into this method.

Sources: [1] [2] [3]

A porridge with some chunks left

This version starts the yam in the pepper mixture, adds palm oil during simmering and mashes only after the pieces soften. It follows Lola Osinkolu’s sequence; Nigerian Food TV independently supports a tender-yam porridge with some chunks remaining. Tomato and leafy greens vary between household versions.

Red palm oil gives the porridge its flavor and warm orange color. Neutral oil can supply fat but cannot reproduce that character. Omitting fish and crayfish makes the flavor milder; use vegetable bouillon if you want a plant-based version. Fish and crayfish are separate allergens, so leaving out one does not remove the other.

Sources: [1] [2]

Keep the additions simple

The fish option is already-cooked canned fish. Fresh fish, stockfish and dried fish require different preparation and cannot simply be dropped into the final few minutes. Check canned fish for bones, and check bouillon for wheat, soy and other labeled allergens.

Yam variety and age affect how much water it absorbs. The starting water quantity is a guide; the liquid-level check and fork-tender endpoint are more reliable than a fixed cooking time. Add water before the bottom catches, then mash to thicken.

Sources: [1] [2]

Keep leftovers safely

The porridge thickens when chilled. Reheat with a little water, stirring from the bottom. Refrigerate leftovers in shallow containers within 2 hours of cooking, or 1 hour when the surroundings are above 90°F. Keep the refrigerator at 40°F or colder, use within 3–4 days and reheat to 165°F.

Sources: [4] [5] [6]

Research sources

  1. Lola Osinkolu / Chef Lola's Kitchen — Yam Pottage/Yam Porridge (Asaro) (checked 2026-10-22)
  2. Nky Lily Lete / Nigerian Food TV — Asaro (Nigerian Mashed Yam Porridge) (checked 2026-10-22)
  3. Lola Osinkolu / Chef Lola's Kitchen — True Yam / African Yam (checked 2026-10-22)
  4. U.S. FDA — Safe Food Handling (checked 2026-10-22)
  5. University of Illinois Extension — Leftovers (checked 2026-10-22)
  6. University of Illinois Extension — Refrigerator Storage (checked 2026-10-22)