P
Middle Eastern
Halva — The Tahini That Sets and the Marble That Tells You How
Sesame halva is made by cooking sugar syrup (with glucose to prevent crystallisation) to approximately 130°C (soft crack stage) and then incorporating tahini (raw sesame paste — not roasted sesame paste, which produces a different, darker, less cohesive result). The key ingredient that most commercial halva contains and most recipes do not acknowledge: saponin-rich extract from the root of the soapwort plant (Saponaria officinalis — erq al-halawa in Arabic, "root of the sweet"). This extract is boiled in water and beaten to produce a dense white foam, which is folded into the tahini-sugar mixture. The foam is what produces halva's characteristic fibrous, slightly flaky interior texture — without it, the tahini-sugar combination produces a dense, brittle mass with no structural interest. The foaming agent creates the micro-voids between the sesame fat and sugar crystals that give halva its specific crumble.
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I
The Market List
The benchmark for each ingredient, and who stocks it near you. Tap a stockist to go straight to the product.
500 g
raw sesame tahini
not roasted; highest oil content available, freshly made if possible
Not yet stocked in British Columbia
300 g
caster sugar
Your own market
50 g
glucose syrup
to inhibit crystallisation
Not yet stocked in British Columbia
100 ml
water
for the syrup
Your own market
15 g
soapwort root extract (erq al-halawa)
dried root of Saponaria officinalis; or commercial saponin-based halva foaming agent
Not yet stocked in British Columbia
150 ml
water
for boiling the soapwort extract
Your own market
II
The Method
1
Simmer the soapwort root in 150 ml water for 20 minutes, then strain and discard the root, allowing the liquid to cool to room temperature before beating — if you whip it hot it will not hold its structure. Beat the strained liquid vigorously by hand whisk or stand mixer until it forms a dense, stiff white foam that holds its peaks and does not collapse when the whisk is lifted. The foam is ready when it is opaque and will not flow.
2
Combine the sugar, glucose syrup, and 100 ml water in a heavy saucepan and bring to the boil over medium heat without stirring, so no premature crystals form at the edges and cloud the syrup. Cook, monitoring with a calibrated sugar thermometer, until the syrup reaches 125–130°C — below 125°C the halva will be soft and sticky, above 130°C it will be brittle rather than fudgy-crumbly. Remove from the heat the moment the thermometer reads 128°C.
3
Pour the measured tahini into a wide bowl and stream the hot syrup into it in a slow, steady pour, folding continuously with a wide spatula so the heat distributes evenly and the mixture does not seize into lumps. Do not stir in circles, which would deflate the soapwort foam you are about to add. Fold until the syrup is fully absorbed and the mixture is uniform in colour and viscosity — it will be warm, fluid, and glossy.
4
This is where the dish lives or dies. Working quickly while the tahini-syrup mixture is still warm and fluid, add the soapwort foam in two additions, folding each in with the absolute minimum number of strokes needed to distribute it, so the foam's micro-voids survive into the finished mass and give halva its characteristic faintly fibrous, crumbling texture rather than a dense, greasy slab. Fold, do not stir: each unnecessary stroke collapses structure that cannot be recovered. The finished mass should appear slightly lighter in colour than the raw tahini, with a faintly marbled, streaked surface showing where foam has been incorporated but not fully erased.
5
Pour immediately into a lightly oiled loaf tin or square mould, then draw a spatula or skewer through the surface in two or three slow passes to produce the characteristic swirl — the pattern should remain distinct as two colours, yet partially merged enough to show integration, since a completely unmixed two-colour surface means the mass was poured too cold. Set at room temperature, uncovered, for a minimum of four hours. Do not refrigerate, as cold setting suppresses the micro-voids that give halva its character.
6
Unmould when fully set and break a small piece from one end to read the texture: it should crumble with slight resistance, producing irregular fragments with a faintly fibrous internal structure visible at the break, whereas a clean, smooth break tells you the foam was insufficiently incorporated. Held on the tongue, the halva should begin to melt at body temperature, releasing sesame oil and sweetness in approximately equal measure.
III
Quality Hierarchy
01
Reserve — Freshly stone-ground raw sesame tahini from a single sesame variety, highest available oil content; dried soapwort root (Saponaria officinalis) prepared from scratch; sugar cooked to the precise mid-point of 128°C on a calibrated thermometer.
02
Estate — A named, single-origin commercial raw sesame tahini — not roasted — with a declared high oil content; dried soapwort root sourced from a Middle Eastern grocer; glucose syrup of confirmed confectionery grade.
03
Market — A well-regarded commercial raw tahini; a commercial saponin-based halva foaming agent in place of fresh soapwort preparation; standard confectionery glucose syrup.
04
House — Any unsweetened raw (not roasted) sesame tahini; commercial foaming agent; domestic sugar thermometer verified against boiling point. The foam step remains mandatory at every rung — omission produces a dense, brittle mass with no structural interest.
IV
Sensory Tests
◇Sight. The soapwort foam stands in stiff, opaque peaks and does not flow or collapse when the whisk is lifted.
◇Sight. The sugar syrup thermometer reads 125–130°C; the colour remains pale gold with no amber tint.
◇Sight. The set halva's surface shows a swirl that is distinct as two colours yet partially merged — not a clean two-colour division, not a uniform blur.
◇Touch. A broken piece crumbles with slight resistance and shows a faintly fibrous cross-section; a smooth, clean break indicates the foam was insufficiently incorporated.
◇Where it lives or dies. The soapwort foam must be folded into the warm tahini-syrup mixture with the minimum number of strokes: every unnecessary motion collapses the micro-voids that are the sole source of halva's fibrous, crumbling interior.
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VI
What to Pour
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