Bulgarian halva: sunflower vs sesame tahan, nuga and the threads that prove it

Ask a Bulgarian to judge a halva and they will do it in one bite: they break a piece and watch whether it pulls apart into fine threads — "къса се на конци" — and whether it then melts on the tongue. Get those two things right and you have made halva; miss them and you have made sweet paste. This dossier is about how a UK kitchen serving Bulgarian (and Romanian, and wider Balkan) customers gets them right — and about the one authenticity decision, the aerator, that also carries a real regulatory catch. (Hero: img-b6hlv-01 — a cut block of sesame tahan halva showing the fibrous cross-section.) [c10]

A note on the word, honestly told. Halva (халва) is an Arabic word — from the root meaning "sweet" — that entered Bulgarian through Ottoman Turkish, and the sweet itself is part of the Ottoman-heritage confectionery Bulgaria shares with Türkiye and the Levant, historically made and sold by the halvadžija (халваджия), the halva-maker. You will read that halva "comes from Persia in the 5th century BCE"; treat that as legend, not documented history. Sell halva as the old Balkan/Ottoman sweet it is, and keep it in the same family as the baklava and lokum covered in B6-oriental-sweets-baklava-lokum. [c1][c21]

1. Two things called "halva" — keep them apart

The single most useful fact for a buyer is that "halva" covers two unrelated crafts, and confusing them is how you disappoint a customer. (Family diagram: img-b6hlv-05.) [c2]

• Tahan halva (тахан халва) — the one most people mean. A paste of hulled, roasted, stone-ground oilseed (тахан, i.e. tahini-type paste) — either sunflower (слънчогледов тахан) or sesame (сусамов тахан) — is folded into a soapwort-aerated pulled sugar. It is aerated by a plant saponin, so it is vegan.
• Nuga (нуга) / white halva (бяла халва) — a sugar-and-glucose nougat aerated with egg white, usually pressed between two wafer sheets (вафлени кори). It is the torrone/montélimar family and it contains egg.

They share a shelf and a name; they do not share a base, an aerator, an allergen profile, or a fasting status. The table table-halva-families in data.json lays the whole contrast out.

2. Sunflower vs sesame: the choice that makes it Bulgarian

Here is the detail outsiders miss. In Türkiye and the Arab world, tahan halva means sesame (see B2-helva-sesame-tahini and B3-tahini-halva-and-sesame-confections). In Bulgaria, the everyday halva is sunflower — слънчогледова тахан халва — because sunflower is one of the country's big field crops, so the seed is local and cheap. Sesame halva is the dearer "classic"; sunflower is what most people grew up on. (Sunflower: img-b6hlv-02; comparison card: img-b6hlv-07.) [c3]

Both pastes are roughly half oil, which is the whole reason halva behaves as it does (all that free oil has to be held in suspension — that is the aerator's job, Section 4). The platform's first-party seed specs make the trade-off concrete: [c4]

• Sesame (Global Grains hulled): 631 kcal, 61.21 g fat and 20.45 g protein per 100 g, ~61% oil, moisture ≤6%, purity ≥99.9%, and — important — ethylene oxide <0.05 ppm (sesame is a high-risk import for the banned EtO fumigant, so buy to that certificate). It declares the sesame allergen, and hulling uses a sodium-hydroxide processing aid.
• Sunflower (Bioveri shelled): 571 kcal, 48.4 g fat and 18.9 g protein per 100 g, ~48% oil, purity ≥99.95% — and it is grown partly in Bulgaria. Crucially it declares none of the 14 allergens: a sunflower halva is a genuine option for sesame-allergic customers, which a sesame halva can never be. [c19]

For milling tahan yourself you need a stone or colloid mill; the seed craft (wet-hulling by salt-water flotation, a moderate roast to a mid — not burnt — colour, and the fact that a separated oil layer in stored tahan is normal, not spoilage) is the seed-handling of A7-seeds-nuts-toppings, and the reason rancidity is the real shelf-life limit is the polyunsaturated-oil chemistry of A4-fat-types-and-selection — store cool, dry, dark and sealed. (Tahan production is shown in img-b6hlv-06.) [c20][c22]

Sourcing reality. Domson stocks the seed (sesame and sunflower) but not finished tahan paste. You either mill your own or buy ready tahan from a Turkish/Balkan importer.

3. The production stages of tahan halva

The build has a strict order, and each stage maps onto a Pillar A craft. (Full flow: img-b6hlv-06; syrup work: A6-sugar-work-techniques.) [c5]

1. Cook the syrup. Boil sugar + water + glucose to a dense ~120°C firm-ball stage (a drop forms a firm ball in cold water — note this is hotter than the classic ~110°C "thread" stage that some recipes loosely name), then stir in a pinch of citric acid and drop to low heat. The glucose and citric acid together stop the sucrose graining up — the same invert/anti-crystallisation logic as A8-chocolate-confectionery-formulas. [c5][c11]
2. Make the soapwort extract. Boil the soapwort (чувен) root for about 2 hours and reduce it to a small amount (~30 ml) of concentrated liquor. [c5]
3. Whiten and aerate. Whip the syrup, then stream in the soapwort extract while beating hard until the mass turns white and fluffy. This is the pivotal step (Section 4). [c5]
4. Knead in the tahan. Fold/knead the tahan into the aerated mass until fine threads (конци) form — "образуват се конците." Over-kneading makes it hard; stop as the strings appear. [c5][c10]
5. Finish and set. The mass is warmed/finished (one documented Bulgarian factory in Stambolovo, Ruse region, running ~1 tonne/day, works it at around 135°C and judges the mix by hand), then pressed into a block and left to set. [c7]

A worked ratio from a Bulgarian source: ~350 g tahan : 300 g sugar : 50 g glucose : ~30 ml soapwort extract : a pinch of citric acid, plus water for the syrup — i.e. tahan is about half the finished mass (see the formula card formula-tahan-halva-soapwort). [c6]

4. Çöven's Bulgarian cousin: soapwort (чувен) — and the regulatory catch

The ingredient that turns paste-and-syrup into halva is the aerator, and the authentic one is a plant saponin. In Bulgarian it is чувен (also сапуниче, пенявец) — the saponin-rich roots of the soapwort family (Saponaria officinalis / Gypsophila spp., family Caryophyllaceae). Its saponins whiten, aerate and emulsify the mass: they beat air in, turn it white, build the fibrous crumb, and — the make-or-break function — hold the ~50% oil in suspension so it never weeps out. It is the very same "halva-root" saponin used as çöven in Türkiye (B2-helva-sesame-tahini) and as shirsh/'irq al-halawa in the Arab world (B3-tahini-halva-and-sesame-confections). (Explainer card: img-b6hlv-10; aerator options: table-aerators.) [c8]

A commercial Bulgarian label reads exactly this way — the RAHAT sunflower tahan halva declares слънчогледов тахан 50%, захар, отвара от чувен (soapwort decoction), лимонена киселина (citric acid), емулгатор (emulsifier), ароматизант: ванилия (vanilla). Many factories now also add an E-number emulsifier alongside or instead of the soapwort for the same emulsifying function. [c11]

FLAGGED FOR LEGAL/REGULATORY REVIEW — the authenticity paradox. Used for its foaming/emulsifying function, a soapwort (чувен, Saponaria/Gypsophila) saponin extract meets the UK/EU definition of a food additive — but it is not an authorised additive in Great Britain or the EU. The only authorised saponin additive is quillaia extract (E999), from a different plant and permitted only in some drinks and cider/perry, not confectionery; soapwort saponins are also gastro-intestinally irritant in quantity. So although чувен is the authentic ingredient (and is used lawfully in halva made in Bulgaria/Türkiye), a UK-based maker should take regulatory advice before using it directly or before selling imported halva made with it — exactly the position set out for çöven and shirsh al-halawa in the sister articles. The egg-white route (Section 6) and permitted E-number emulsifiers are the lawful alternatives. [c9]

5. Quality markers and faults

A good tahan halva is judged by texture, not sweetness. It should [c10]:

• break into fine threads (на конци) and melt in the mouth — the sign it was properly whipped and kneaded;
• be slightly soft, homogeneous and free of gritty sugar crystals;
• show no weeping oil on the cut face.

The two classic failures are graininess (sucrose crystallised — fix with enough glucose + citric acid and by working the mass warm) and oil weeping (under-aerated — boil a stronger soapwort extract and whip to a fully white mass before adding the tahan). A dense, thread-less slab means the syrup was under-whipped or the tahan was folded in too hot or over-kneaded. The full diagnostic tree is in data.json → faults-halva. [c11][c8]

6. Nuga (нуга) and white halva (бяла халва): the egg-white family

The other "halva" on a Bulgarian counter is a different confection entirely. Nuga — and the harder бяла халва — is a sugar-and-glucose nougat aerated with egg white, the torrone/montélimar family. (Build: img-b6hlv-08.) The method: boil sugar + glucose + water to a very thick syrup, whip it into beaten egg whites (for commercial work, rehydrated pasteurised dried albumen — see the safety flag below) to a stiff white foam, fold in roasted nuts (peanuts around 8%, or walnuts), and spread the soft mass between two wafer sheets (вафлени кори) before cutting (formula card formula-nuga-white-halva). [c14]

For a UK bakery the practical aerator is dried egg-white powder. The platform's Ovopol albumen is hen egg white min 98.5% + citric acid, protein ≥80% (panel 82 g/100 g), 335 kcal/100 g; you rehydrate it 1:9 with water and 1 kg replaces ~316 fresh whites, with a 24-month shelf life. Note the consequence: nuga therefore carries the EGG allergen (and, from the wafer, gluten), whereas the soapwort-aerated tahan halva is vegan. That single difference matters for both labelling and fasting (Section 7). [c15][c19]

FLAGGED FOR FOOD-SAFETY REVIEW — raw egg. In a nougat the egg-white foam is only partly cooked by the hot syrup (an Italian-meringue-style set), not reliably pasteurised. For any commercial batch, aerate with pasteurised dried egg albumen (the Ovopol powder above is a spray-dried, pasteurised albumen) rather than raw fresh egg whites, to control the Salmonella risk in an unbaked confection. Confirm your process against your own food-safety plan. [c14][c15]

7. Halva on the calendar: Sirni Zagovezni and Lent

Halva is not only an impulse buy — it is a calendar fixture, which means predictable demand spikes you can plan production around (full context in B6-festive-baking-calendar). [c17][c18]

• Sirni Zagovezni (Сирни Заговезни) — Cheesefare / Forgiveness Sunday, the seventh Sunday before Easter (in 2026, 22 February for the Orthodox), the eve of Great Lent — is the halva day. After the evening meal comes hamkane (хамкане, also лямкане/люскане): a boiled egg, cheese, a piece of coal and — since the late 19th century in the towns — a piece of white halva are tied to a red thread hung from the ceiling; the eldest man swings it and everyone, children especially, tries to catch it by mouth, no hands; the thread is then used to divine the year ahead. (Scene: img-b6hlv-09.) [c17]
• Because soapwort-aerated tahan halva has no animal products, it is a fasting (постно/Lenten) sweet — so it sells right through Great Lent and the Easter fast, and among Orthodox Romanian customers too (a link back to the fasting baking of B4-cozonac-de-post-vegan-baking). Nuga made with egg white is not Lenten — keep the two clearly separated on a fasting-season order. [c18]

8. Variants a customer will ask for by name

Merchandise the range Bulgarians recognise (table-variants): обикновена/sade (plain), какаова (cocoa — cocoa blended into the tahan before the syrup; img-b6hlv-03), с ядки (with walnuts, pistachios, peanuts or pine nuts; img-b6hlv-04), ванилова (vanilla), and the нуга/бяла халва nougat lines. Premium tiers are the nut and chocolate-coated bars — for enrobing, see A6-chocolate-selection-couverture on couverture vs compound coating. Halva also sits comfortably beside the rose-water aromatics some makers use (B6-rose-water-culinary-use) and, as a sugar-paste confection, shares kinship with A6-marzipan-fondant-sugar-pastes. [c13]

9. Food safety and allergens (flagged for review)

Halva is an allergen-variable category — declare per line, not per counter [c19]:

• Sesame tahan halva contains sesame (one of the 14 UK/EU allergens); buy sesame to an EtO certificate.
• Sunflower tahan halva carries no seed allergen — its main advantage — unless nuts are added.
• Nut-studded halva adds tree nuts and/or peanuts.
• Nuga / white halva adds egg (albumen) and, from the wafer, cereals/gluten, plus nuts — and, because the foam is only part-cooked, use pasteurised dried albumen rather than raw whites (Section 6).
• Cocoa or chocolate-coated lines can add milk and soya.

Separately, the traditional soapwort (чувен) aerator is not an authorised GB/EU food additive (Section 4) — a regulatory, not merely allergen, question. All allergen, additive and nutrition statements must be confirmed against your own finished-product testing, the current supplier specifications and current GB/EU law before any customer-facing label or claim. Nutrition is a wide band — a commercial 100%-sunflower halva reports 487 kcal, 21 g fat and 50 g sugars per 100 g, while a Bulgarian reference cites up to ~644 kcal (there quoted for the richer sesame type; independent sunflower products cluster nearer ~520–586 kcal) — so use a tested panel, not a web figure. [c9][c12]

10. Buy the ingredients for this (Domson catalogue)

A UK Bulgarian halva kitchen builds the range from these stocked lines (full list with ids in data.json → linked_products / linked_brands):

• Tahan base: Sunflower Seeds 25 kg (Bioveri) — the everyday Bulgarian base, ~48% oil, no seed allergen, grown partly in Bulgaria — or Sesame Seeds 25 kg (Global Grains) for the classic sesame halva (~61% oil, EtO-certified). Bulk alternatives: Ros-Sweet sesame and Chelmer Foods sunflower.
• Syrup: Granulated Sugar 25 kg (sucrose ≥99.7%, 400 kcal/100 g, no allergens) or Kent Foods Caster Sugar 25 kg, plus Ratos Natura Glucose Syrup 14 kg as the anti-crystallisation binder. [c16]
• Nuga aerator & sweeteners: Ovopol Egg White Powder 20 kg (rehydrate 1:9) for the nougat foam; Ratos Natura Multifloral Honey 14 kg for a honey-nougat note.
• Flavour & inclusions: JAR Dark Dutch Cocoa GT78 for cocoa halva; PGD Roasted Peanut Halves, Walnut Halves, Giuso Pistachio Paste, Polmarkus Roasted Diced Pistachios and Kluman Shelled Almonds for nut lines.
• Coating: Terravita Bambo Prima Dark Compound Coating Flakes 20 kg for chocolate-enrobed bars.

Sourcing honesty. Domson stocks the commodities — seed, sugar, glucose, egg albumen, cocoa, nuts, coating — but not finished tahan paste and not soapwort (чувен) extract, the two things that most define authentic tahan halva. Mill your own tahan or import it; and treat soapwort as a regulatory question (Section 4) — the lawful UK alternatives are egg-white (for nuga) and permitted E-number emulsifiers.

Cross-links

Pillar A craft concepts: A6-sugar-work-techniques (syrup to the thread stage, aeration), A8-chocolate-confectionery-formulas (glucose/citric-acid anti-crystallisation, water activity, shelf life), A7-seeds-nuts-toppings (roasting sesame/sunflower, rancidity, allergen control), A4-fat-types-and-selection (the ~50% oil and why halva goes rancid), A6-marzipan-fondant-sugar-pastes (the sugar-paste family), A6-chocolate-selection-couverture (coating the bars). Sister Bulgarian articles: B6-oriental-sweets-baklava-lokum (the wider Ottoman-heritage sweet range and the halvadžija trade), B6-festive-baking-calendar (Sirni Zagovezni and Lent), B6-rose-water-culinary-use (aromatics). Cross-tradition halva cousins: B2-helva-sesame-tahini (Turkish tahin helvası, çöven), B3-tahini-halva-and-sesame-confections (Arab halawa tahiniyya, shirsh al-halawa).