Africa
High-Protein Senegalese Chicken Yassa
Chef-tested recipe
Charred bone-in chicken braised in a bright lemon-mustard sauce with melting onions and Scotch bonnet
Chicken yassa, or poulet yassa, is a celebrated Senegalese dish associated with the Casamance region and now cooked across West Africa. Its defining elements are bone-in chicken, abundant sliced onions, citrus, mustard, chilli, and a preliminary grilling or browning step before the meat finishes in the onion sauce. The onions are not a garnish: cooked patiently, they become the body of the sauce and balance the sharp lemon marinade. This version keeps that traditional architecture, uses chicken legs for flavour and dependable protein, and includes green olives as a common Senegalese addition. Rice or fonio remains the customary accompaniment and is kept separate so the yassa itself stays true to its character.
Recipe at a glance
Before you begin
Ingredients & equipment
Gather what you need first, then cook through the method with confidence.
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Equipment
- Non-reactive mixing bowlpaid link
- Charcoal grillpaid link
- Heavy grill panpaid link
- Wide casserolepaid link
- Tongspaid link
- Chef’s knifepaid link
- Cutting boardpaid link
- Digital kitchen scalepaid link
- Measuring jugpaid link
- Instant-read thermometerpaid link
Ingredients
For the chicken and marinade
- Bone-in chicken legs, separated into thighs and drumsticks: 1800 g
- Yellow onions, thinly sliced: 1200 g
- Fresh lemon juice: 180 ml
- Dijon mustard: 75 g
- Garlic, finely grated: 25 g
- Scotch bonnet chilli, pierced but left whole: 1 whole
- Fine sea saltpaid link: 14 g
- Freshly ground black pepper: 5 g
- Bay leaves: 3 whole
- Groundnut oilpaid link: 60 ml
For the braise
- Unsalted chicken stock: 350 ml
- Green olives, drained: 150 g
- Fresh lemon zest: 4 g
For serving
- Cooked broken rice or foniopaid link: 900 g
- Fresh parsley, roughly chopped: 20 g
Preparation Overview
Separate the chicken legs at the joint and pat them dry. Slice the onions evenly so they soften at the same rate. Mix the lemon, mustard, garlic, chilli, seasoning, bay, and part of the oil, then marinate the chicken and onions together. Before cooking, lift out the chicken and scrape off clinging onion so it can brown without burning.
Method
Make the marinade. In a non-reactive bowl, combine the lemon juice, mustard, garlic, whole Scotch bonnet, salt, pepper, bay leaves, and 20 ml groundnut oil.
Marinate the yassa. Add the chicken and sliced onions, turn everything thoroughly, cover, and refrigerate for 4 hours.
Separate the components. Lift the chicken from the bowl, scrape the onions back into the marinade, and pat the skin lightly dry. Keep every drop of marinade.
Brown the chicken. Heat a charcoal grill or heavy grill pan over medium-high heat, brush the chicken with 20 ml oil, and brown for 5 to 7 minutes per side until deeply coloured but not cooked through.
Start the onion sauce. Heat the remaining 20 ml oil in a wide casserole. Add the drained marinated onions and cook over medium heat for 20 to 25 minutes, stirring often, until very soft and golden.
Reduce the marinade. Pour the reserved marinade into the onions and simmer for 3 minutes so the raw chicken juices cook completely.
Braise the chicken. Add the stock, return the chicken and bay leaves, cover partially, and simmer gently for 25 to 30 minutes until the thickest pieces reach at least 74°C.
Finish the sauce. Add the olives and lemon zest, uncover, and simmer for 5 minutes until the onion sauce lightly coats the chicken. Remove the whole chilli and bay leaves.
Rest and serve. Rest the chicken in the sauce for 10 minutes, scatter with parsley, and serve with broken rice or fonio.
Beginner Technique Notes
Use a non-reactive glass, ceramic, or stainless-steel bowl because prolonged lemon contact can react with aluminium.
Scraping onion from the chicken before grilling prevents bitter burnt pieces.
Keep the Scotch bonnet whole for fragrance with measured heat; do not pierce it further unless a hotter sauce is wanted.
The onions need steady medium heat. A dark scorch makes the lemon sauce bitter.
Always boil the reserved marinade before it becomes a sauce because it has touched raw chicken.
Tips and Variations
Marinate overnight for deeper seasoning, especially when using a mature free-range bird.
Chicken may be browned under a hot oven grill when charcoal cooking is unavailable; keep the braising step unchanged.
Some Senegalese cooks add sliced carrot, while others keep the sauce almost entirely onion. Add 250 g carrot only as a regional household variation.
Fish yassa follows the same onion-and-citrus idea but requires a much shorter cooking time and should be treated as a separate dish.
Do not reduce the onion quantity dramatically. The slow-cooked onions are the sauce, not an optional vegetable.
Serving Ideas
- Spoon a generous bed of rice or fonio onto each platter, set one thigh and one drumstick over it, and cover the meat with glossy onions and olives. Offer the chilli separately for diners who want more heat. A communal platter reflects the generous way yassa is often shared.
Storage
Cool within 2 hours and refrigerate the chicken with its sauce in a covered container for up to 3 days. Reheat gently to 74°C, adding a small splash of stock if the onions become too thick. Freeze without the rice for up to 2 months; thaw overnight in the refrigerator.
Nutritional Value
Allergen Notes
Contains mustard. Check stock and mustard labels for celery, gluten, sulphites, and other cross-contact declarations. Olives may contain sulphites. Handle the whole Scotch bonnet with gloves and avoid touching the eyes.
Frequently Asked Questions
Why does yassa use so many onions?
They soften into the main sauce and provide sweetness to balance the lemon and mustard.
Must the chicken be grilled first?
Grilling or strong browning supplies the smoky, roasted character expected in chicken yassa before it is braised.
Can I use boneless chicken breast?
Bone-in legs are more traditional and remain moist during the two-stage cooking process. Breast cooks faster and can become dry.
Is green olive traditional?
Olives are a common addition in contemporary Senegalese yassa, although simpler versions may omit them.
Can I make it one day ahead?
Yes. The onion sauce reheats well and its flavour often deepens overnight.