Nigerian Beef Stir-Fry with Oven-Roasted Yam Wedges (Egusi-Free Wok Beef)

How to Make It

1. 1

   Prepare and Marinate the Beef

   Pat the beef strips dry with a clean cloth. In a bowl, combine the beef with half the minced garlic, grated ginger, 15ml of the low-sodium soy sauce, ground cameroon pepper, and a pinch of sea salt. Mix well to coat every strip evenly. Cover and allow to marinate for at least 15 minutes at room temperature, or up to 2 hours in the refrigerator for deeper flavour.

   Tip: Marinating the beef without oil first allows the flavour to penetrate the meat fibres. Thin slicing ensures quick, even cooking and helps retain tenderness without overcooking.
2. 2

   Roast the Yam Wedges

   Preheat your oven to 200°C (390°F) or set up your Nigerian gas oven at medium-high heat. Toss the yam wedges in 10ml of groundnut oil, a pinch of sea salt, and a light dusting of ground ginger. Spread in a single layer on a lightly greased baking tray. Roast for 25–30 minutes, turning once halfway, until golden on the outside and tender inside.

   Tip: Oven-roasting yam instead of deep-frying significantly reduces the fat content and lowers the glycaemic load. Sweet potato wedges are an excellent lower-GI substitute for diabetic patients.
3. 3

   Sear the Beef Strips

   Heat a large wok, iron skillet, or heavy-bottomed pan over very high heat until it begins to smoke lightly. Add 5ml of groundnut oil and swirl to coat. Working in two batches to avoid steaming the meat, add the beef strips in a single layer. Sear undisturbed for 60–90 seconds, then toss and sear the other side for another 60 seconds until beautifully browned. Remove from the pan and set aside.

   Tip: High heat and working in batches is the secret to getting a proper sear rather than a grey steam-cooked result. Do not overcrowd the pan — this is the most important technique in this recipe.
4. 4

   Stir-Fry the Vegetables

   In the same hot pan, add the remaining 5ml of groundnut oil. Add the sliced onions and stir-fry for 2 minutes until they soften and begin to char slightly at the edges. Add the remaining garlic, the tatashe strips, and green pepper strips. Toss continuously over high heat for 2–3 minutes — you want the vegetables to be cooked but still vibrant and slightly crisp to retain their nutrients and texture.

   Tip: Keeping the vegetables slightly firm (al dente) preserves their fibre content, vitamin C, and natural antioxidants — all of which are particularly important for managing inflammation and blood sugar in diabetic patients.
5. 5

   Build the Sauce and Combine

   Add the chopped tomatoes, mashed iru (locust beans), ground crayfish if using, and the remaining 15ml of low-sodium soy sauce to the vegetables. Stir and cook for 2 minutes. Pour in the beef stock or water to deglaze the pan, scraping up any browned bits from the bottom. Return the seared beef strips to the pan and toss everything together over high heat for 1–2 minutes until the sauce coats the ingredients and reduces slightly.

   Tip: The iru adds deep Nigerian umami flavour with far less sodium than a full bouillon cube. If you have a kidney health concern, skip the iru and crayfish and increase garlic and ginger instead.
6. 6

   Finish and Garnish

   Remove the pan from heat. Scatter the torn fresh scent leaves (efirin) and sliced spring onions over the stir-fry and fold in gently — the residual heat will wilt them just enough. Taste and adjust seasoning minimally. Plate a generous portion of oven-roasted yam wedges on each plate and spoon the beef pepper stir-fry over and alongside them. Serve immediately while hot.

   Tip: Adding scent leaves off the heat preserves their volatile aromatic oils and medicinal phytochemicals. Scent leaf (Ocimum gratissimum) has documented anti-diabetic and anti-inflammatory properties in Nigerian ethnomedicine.