Add the roughly chopped white onion, 4 garlic cloves, and the fresh parsley leaves to a food processor. Pulse until the mixture forms a coarse, wet paste — textured enough that some small pieces remain visible rather than being processed completely smooth. The slight texture helps the kebab mixture retain structural cohesion during shaping; completely smooth paste loses the fibrous quality that helps the protein matrix bind. Transfer the pulsed mixture to a cheesecloth or into a fine-mesh sieve set over a bowl. Press firmly and repeatedly with the back of a spoon or squeeze the cheesecloth tightly, extracting as much liquid as possible. The amount of liquid pressed from a medium white onion is substantial — more than expected — and every millilitre removed at this stage is moisture that would otherwise prevent the kebabs from developing char and cause them to slip from their skewers on the grill. The correctly pressed paste should feel significantly drier than the freshly pulsed mixture, slightly clumped, and hold its compressed shape rather than spreading. Do not underperform this step — it is the preparation decision most directly responsible for whether Adana kebabs hold on their skewers or fall apart.

In a large bowl, combine the 800g of ground lamb shoulder, 25g of softened butter, the strained aromatic paste, 2 tsp of pul biber, 1½ tsp of cumin, 1 tsp of paprika, 1½ tsp of fine sea salt, and 1 tsp of black pepper. Begin working the mixture with both hands. This mixing step must be aggressive and sustained — 3–5 full minutes of kneading, folding, pressing, and working the mixture until it becomes visibly more homogeneous and develops a sticky, slightly tacky consistency that holds its shape when a piece is pressed between fingers. The extended working time is the technique that develops protein binding: the myosin proteins in the ground lamb, when worked mechanically, form an interlocking matrix that provides the structural strength for skewering and grilling. Under-mixed kebab mixture has insufficient protein development — it crumbles apart on the skewer rather than holding the long, rectangular form through the rotation and heat of grilling. The mixture should feel distinctly different at 5 minutes of mixing compared to 1 minute — noticeably stickier, more paste-like, and more cohesive. The softened butter is an Adana-specific addition that contributes to the kebab's richness and the caramelisation of the exterior — its milk solids browning against the grill's heat alongside the lamb fat. For the firmest, most workable mixture — especially if grilling immediately after mixing — refrigerate the covered bowl for 30 minutes to 1 hour. Cold fat in the mixture holds the skewered shape more reliably during the initial grill contact than warm, soft mixture.

For the complete technique — including the tomato base preparation and the couscous absorption method — follow the full Moroccan Tomato Couscous recipe. Summary for 4 servings: heat the 2 tbsp of olive oil in a saucepan over medium heat and cook the minced garlic for 30 seconds until fragrant. Add the cumin, paprika, coriander, and cinnamon and toast for 20–30 seconds. Add the 400g of crushed tomatoes and stir to combine with the spiced oil. Simmer for 5 minutes until slightly thickened. Pour in the 400ml of hot stock and bring to a boil. Add the 300g of couscous, stir, cover, and remove from heat. Allow to steam for 5 minutes. Fluff with a fork and fold through the chopped parsley and cilantro. Season with salt and pepper. The tomato couscous should be fluffy, spiced, and specifically warm in flavour — the bed for the smoky, fatty lamb that sits on top.

Divide the rested mixture into 8 equal portions — using a kitchen scale for consistency, as equal portions produce kebabs of consistent length and thickness that cook at the same rate. With wet hands — keeping a bowl of cold water nearby and re-wetting regularly — press each portion firmly around a flat metal skewer or thick wooden skewer (pre-soaked 30 minutes for wooden). Using both hands, shape the meat along the skewer into a long, rectangular kebab approximately 15–18cm in length and 2.5–3cm thick throughout. The rectangular cross-section is the traditional Adana shape — providing four flat faces that contact the grill surface as the skewer is rotated. Keep the thickness consistent from end to end: thicker sections cook slower, producing uneven doneness along the kebab's length. The wet hands prevent the mixture from sticking and allow smooth shaping. Press the meat firmly against the skewer — the kebab must grip the skewer rather than simply sitting around it. Any section that hangs loosely will slide off during rotation. If the mixture feels too soft to hold the shape reliably, refrigerate the shaped skewers on a tray for 15–20 minutes before grilling.

Preheat the grill — charcoal or wood fire produces the most authentic result; the fat dripping from the lamb shoulder onto the hot coals creates brief flare-ups that char the exterior surface with smoke compounds that gas and cast iron cannot replicate. Preheat thoroughly until the grates are genuinely hot. Place the skewers on the grill. Rotate every 60–90 seconds — turning to expose each of the four flat faces to the direct heat in sequence rather than leaving one face down for the full cooking time. The continuous rotation is what produces the specific even, deeply charred exterior across all surfaces of Adana kebab. Grill for 8–10 minutes total, until the exterior is deeply charred and slightly crisped in places while the interior reads 60–65°C — still slightly pink and juicy at medium. The fat dripping from the lamb shoulder onto the coals is the flavour event of this preparation — the rendered fat combusting briefly as it contacts the hot coals produces the smoke compounds that infuse the rotating kebab with the specific outdoor-grill depth that is inseparable from Adana kebab's character. Indoor alternative: heat a cast iron or heavy stainless steel grill pan over the highest available heat for 3–4 minutes until smoking. Add a small amount of high-smoke-point oil. Grill the skewers in batches of 3–4, rotating every 60–90 seconds for 8–10 minutes total.

Remove the kebabs from the grill and rest for 3–5 minutes — allowing the juices redistributed to the surface by the grilling heat to stabilise before serving. Divide the tomato couscous among four plates, spreading it as the base. Slide 2 kebabs per person over the couscous. Add the Sumac Onions alongside — their sharp, acidic, slightly briny pickled quality specifically cuts through the rich, fatty lamb and the warm spiced couscous. Add a generous spoonful of Authentic Tzatziki alongside — its cool, garlicky creaminess providing the thermal and dairy contrast to the hot charred meat. Scatter fresh flat-leaf parsley. Place lemon wedges alongside.