Igbo Ofe Onugbu Black Soup with Ugu and Cocoyam Thickener

How to Make It

1. 1

   Prepare and Wash the Bitter Leaf

   Place the fresh bitter leaf (onugbu) in a large bowl with cold water. Squeeze and rinse repeatedly — at least 4 to 5 times — until the water runs almost clear and most of the intense bitterness is removed. This step reduces oxalate load without eliminating the beneficial chlorophyll and fibre content. Set aside drained.

   Tip: Do not over-wash; a mild residual bitterness is desirable and supports bile production and digestion.
2. 2

   Prepare the Cocoyam Thickener

   If using dried cocoyam corms, place them in a dry pan over medium heat and toast for 5 to 7 minutes until lightly browned and aromatic. Allow to cool, then blend or pound to a fine, smooth powder. Alternatively, if using fresh cocoyam, peel, boil until soft (about 20 minutes), and blend with a small amount of water into a smooth paste. The cocoyam provides a low-glycaemic, fibre-rich thickening agent superior to processed starches.

   Tip: Toasting the dried cocoyam deepens the earthy, nutty flavour that gives this soup its signature dark richness.
3. 3

   Season and Parboil the Meat

   Place goat meat chunks in a pot. Add half the chopped onion, ground ehuru, a pinch of salt, and 200ml of water. Cook over medium heat for 20 to 25 minutes until the meat is partially tender. Add the soaked and deboned stockfish in the last 10 minutes of this parboil. Reserve all the meat stock — do not discard it, as it carries essential minerals and collagen from the bones.

   Tip: Parboiling the meat separately controls fat content; skim off excess surface fat from the stock before adding to soup.
4. 4

   Build the Soup Base

   In a wide, heavy-bottomed pot, heat the palm oil over low-medium heat for 2 minutes (do not bleach). Add the remaining chopped onion and sauté for 3 minutes until softened and fragrant. Add the blended scotch bonnet pepper and cook, stirring, for another 4 to 5 minutes until the raw pepper smell dissipates and the oil deepens in colour.

   Tip: Low heat preserves the tocopherols and carotenoids in unrefined palm oil — never bleach palm oil for clinical recipes.
5. 5

   Add Proteins and Stock

   Transfer the parboiled goat meat, stockfish, and all reserved meat stock into the pot with the pepper base. Add the smoked catfish (flaked), ground crayfish, ogiri igbo paste, and the low-sodium bouillon cube or bone broth. Stir well and bring to a gentle simmer over medium heat. Cook uncovered for 10 minutes to allow flavours to meld and protein to fully cook through.

   Tip: Ogiri igbo adds deep fermented umami flavour, which reduces the temptation to over-salt the soup — ideal for hypertension management.
6. 6

   Thicken the Soup

   Gradually stir in the ground cocoyam powder (or blended cocoyam paste) a little at a time, stirring continuously to prevent lumps. If using achi powder as a supplement, dissolve it in 3 tablespoons of cold water first before adding. Allow the soup to simmer on low heat for 8 to 10 minutes, stirring occasionally, until the soup thickens to a smooth, velvety, dark consistency.

   Tip: Add thickener in small batches; you can always add more, but an over-thickened soup is harder to correct without diluting flavour.
7. 7

   Add the Leafy Greens

   Add the washed bitter leaf (onugbu) and stir into the soup. Follow immediately with the shredded ugu (fluted pumpkin leaves) and uziza leaves. Stir gently and cook uncovered on low heat for no more than 4 to 5 minutes. Over-cooking destroys the heat-sensitive folate, vitamin C, and iron content of the greens. Taste and adjust seasoning with a small pinch of salt only if necessary.

   Tip: Adding greens last and cooking briefly preserves their vibrant nutrients — a key clinical nutrition principle for maximising micronutrient retention.
8. 8

   Rest and Serve

   Turn off heat and allow the soup to rest uncovered for 3 minutes before serving. This resting time allows the flavours to settle and the soup to reach the ideal serving consistency. Ladle into bowls and serve hot alongside small portions of pounded yam made with 50% unripe plantain, oat swallow, or boiled cocoyam for a complete low-GI meal.

   Tip: For diabetes and weight management, pair with oat or plantain swallow instead of regular pounded yam to maintain a low glycaemic load for the full meal.