Place the dried chickpeas in a large bowl and cover generously with cold water — by at least 5–6cm, as the chickpeas will absorb significant water and roughly double in size during the soak. Add ½ tsp of baking soda to the soaking water and stir briefly to dissolve. The alkaline environment created by the baking soda progressively weakens the pectin matrix in the chickpea skins and cell walls throughout the soaking period, beginning the softening process before any heat is applied. Soak for 8 hours at room temperature or overnight. Drain and discard the soaking water — it contains released starches, oligosaccharides, and the spent baking soda, none of which should carry forward into the cooking process.

While the chickpeas are cooking in the subsequent step, roast the garlic so both are ready at approximately the same time. Place the 5 unpeeled garlic cloves on a small square of aluminium foil. Drizzle a small amount of olive oil over the cloves — enough to lightly coat each one. Fold the foil into a tight parcel that fully encloses the garlic with no gaps for steam to escape. Place the foil parcel in an oven preheated to 200°C (390°F) or in an air fryer at 190°C. Roast for 25–35 minutes until the cloves are completely soft when pressed through the foil and the visible surface through any small gaps shows a light golden colour — not browned, not darkened. The target is soft-and-golden rather than brown-and-caramelised: cloves that are still firm have not completed their sugar conversion and will retain some sharpness; cloves that have browned develop a slightly bitter edge that can push the hummus in an unintended direction. The colour inside should be a pale, creamy golden — like roasted onion at the perfect point before it starts to darken. Allow to cool until handleable, then squeeze each clove from the base — the soft, paste-like roasted garlic will slide easily from the papery skin. Discard the skins.

Transfer the soaked, drained chickpeas to a large pot. Cover with fresh cold water by approximately 5cm and add the remaining ½ tsp of baking soda. Bring to a boil over medium-high heat. As the water approaches the boil, a greyish foam accumulates at the surface — skim it off with a large spoon as it forms, just as you would when making a stock. Once boiling, reduce to medium-low heat, cover with a lid, and cook for approximately 30 minutes. Check at the 25-minute mark by removing a single chickpea and pressing it firmly between your fingers or with the back of a fork. It should crush completely and immediately with zero resistance — any firmness at all means the chickpeas need more cooking time. The double baking soda treatment produces chickpeas soft enough that their skins blend invisibly into the finished hummus rather than producing the flecked, slightly gritty texture that insufficiently softened skins create. Drain when fully tender and proceed immediately while still warm.

Transfer the drained warm chickpeas to a food processor immediately. Process for 2–3 minutes, stopping every 30–45 seconds to scrape down the sides and bottom of the bowl with a spatula — any mass adhering to the walls is not being processed and will remain as coarser fragments in the final hummus. The warm chickpeas break down significantly more smoothly than cold ones because the heat keeps the starch in a gelatinised, fluid state that blends easily. Cold chickpeas have starch that has partially retrogradrated back toward a firmer structure, resisting smooth processing. Process until the chickpeas have formed a thick, fairly smooth paste — it will appear dry and stiff at this stage, which is normal before the liquid ingredients are added.

With the food processor running, add the tahini paste in a steady stream. Add the squeezed roasted garlic — all five cloves, as a soft paste directly from the skins. Add the lemon juice, lemon zest, ground cumin, a conservative starting amount of fine sea salt, and freshly ground black pepper. The roasted garlic enters the hummus in a fundamentally different state from the raw smashed garlic of the classic version. Raw garlic contributes sharp, volatile allicin-derived compounds that produce the characteristic pungent, slightly biting garlic note of classic hummus. Roasted garlic's allicin has converted during the extended oven exposure into a range of sweeter, milder, more complex compounds — furfuryl mercaptan and other Maillard-reaction products — that produce warmth, sweetness, and depth without any sharpness. The five cloves specified here would be overwhelmingly pungent if raw; roasted, they produce a subtle, pervasive garlic warmth that elevates every other flavour in the hummus without dominating any of them. Process everything for 2–3 minutes, scraping down the sides frequently, until the mixture is as smooth as it will become before water is added.

With the food processor running, begin adding the ice-cold water one tablespoon at a time, allowing each addition to fully incorporate before adding the next. Cold water — ice-cold specifically — creates a temporary emulsification with the tahini's fat during the mechanical action of processing, dispersing the fat molecules and producing the characteristically light, creamy, aerated texture that distinguishes well-made hummus from a dense paste. Warm water does not create the same emulsification effect — the fat re-aggregates more readily and the result is heavier. Continue adding water until the hummus reaches your preferred consistency. The roasted garlic adds its own slight moisture to the mixture compared to the raw garlic of the classic version, so the water requirement may be marginally less — assess by tablespoon and stop when the texture is right.

Stop the processor and taste carefully. The roasted garlic hummus is notably gentler in its seasoning requirements than the chipotle variation — the dominant flavour impression is warmth and depth rather than sharpness or heat, which means the calibration is about balance rather than intensity. If the hummus tastes flat and muted, it needs salt — the roasted garlic's sweetness can mask the need for salt in a way that raw garlic does not, so taste and season particularly attentively here. If it needs brightness to balance the garlic's sweetness, add more lemon juice. If the garlic warmth is not sufficiently present, add a small pinch of garlic powder — it provides background garlic depth without sharpness. If the earthiness needs amplifying, add a small pinch of additional cumin and black pepper. Adjust until the hummus tastes deeply flavoured with a clear garlic character that is warm and sweet rather than pungent.

Transfer to a wide, shallow serving bowl. Create the characteristic hummus well by sweeping the back of a spoon from the centre outward in a circular motion. Drizzle generously with extra-virgin olive oil into the well and across the surface. Scatter za'atar or sumac — za'atar's earthy, herby complexity is particularly well-suited to this variation, its thyme and oregano character having a natural affinity with roasted garlic. Scatter the chopped fresh parsley across the surface. Serve immediately with warm Homemade Lavash or fresh pita bread.