Dovga: Azerbaijan's Yoghurt-Herb Soup and Its Stain Profile
Dovga (also spelled dövşə or dovşə in some regional dialects) is one of the most distinctive and beloved dishes in Azerbaijani cuisine — a thick, tangy green-white soup made by cooking yoghurt (katıq, the rich, high-fat Azerbaijani cultured dairy) with rice, chickpeas, and a very large quantity of finely chopped fresh herbs. The herbs are the defining characteristic of dovga: a typical preparation uses a substantial quantity of fresh coriander, dill, spinach, green onion (spring onion), and dried or fresh mint. The herbs are stirred into the hot yoghurt-rice mixture and cooked briefly, turning the soup a characteristic pale green flecked with herb colour. Dovga is served both hot (as a warming soup) and cold (as a refreshing summer dish — cold dovga is particularly popular). When dovga spills on carpet, it creates a multi-component stain: yoghurt casein protein and lactic acid, rice starch, chickpea starch and legume protein, and concentrated chlorophyll from the large quantity of cooked herbs.
Yoghurt Casein and Herb Chlorophyll: The Primary Stain Agents
Azerbaijani katıq is typically higher-fat and more concentrated than mass-market yoghurt, giving dovga a richer casein content than a Western yoghurt soup would have. The casein treatment follows the same protocol as all dairy spills: cold water blotting only (hot water permanently coagulates casein), then protease enzyme for 15–20 minutes. The herb chlorophyll is the secondary visual stain agent — the large quantity of green herbs cooked into dovga releases significant chlorophyll into the yoghurt matrix. As with all cooked green vegetables, the chlorophyll partially converts to olive-brown pheophytin during cooking (heat displaces the magnesium from the chlorophyll molecule), but some green chlorophyll colour remains, particularly in cold dovga where the herbs may be less thoroughly cooked. The combined green-white stain from the herb-yoghurt mixture responds to 3% hydrogen peroxide after the casein enzyme step — the peroxide oxidises both the green chlorophyll/pheophytin and any herb tannin yellowing simultaneously.
Rice Starch and Chickpea Protein Components
Rice in dovga is fully cooked and gelatinised, contributing a soft starch residue to the spill. Rice starch is addressed with warm water application (40°C) after the cold-water protein treatment — the sequence is important: cold water first for casein and any yoghurt protein, then warm water for the rice starch. Chickpeas in dovga contribute legume protein (vicilin, legumin) and chickpea starch. Chickpea protein is less efficiently digested by standard protease enzymes than animal protein, but the same protease enzyme step addresses it with extended contact time (20 minutes rather than 15). Chickpea starch is gelatinised from cooking and treated with the same warm water step as the rice starch. If whole chickpeas are visibly embedded in the carpet pile, remove them mechanically first (they are relatively firm after cooking and can be picked out with fingers or a spoon without pressing into the pile).
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Azerbaijani Dovga on Carpet: Common Questions
I spilled cold dovga from the fridge — does the cold temperature affect how I treat it?
Cold dovga from the fridge has a higher viscosity than hot dovga (yoghurt and cooked starch become thicker when chilled), which means it pools rather than spreading immediately — giving you a slightly larger window to respond before it spreads into a wider stain. The treatment steps are identical regardless of the temperature of the spill: the dairy casein, herb chlorophyll, and starch chemistry does not change based on the temperature of the food. One practical difference: cold dovga may require a moment of room-temperature time before the warm-water starch step (40°C warm water applied to a very cold stain penetrates the cool starch residue slightly more effectively once the residue is no longer fridge-cold).
The mint in my dovga has left a brownish residue alongside the green — what is that?
Mint contains tannin-like polyphenolic compounds including rosmarinic acid (a hydroxycinnamic acid also found in rosemary, sage, and basil) and various flavonoids. When mint is cooked in yoghurt, some of these polyphenols oxidise on contact with air and the slightly acidic yoghurt environment, producing the brownish discolouration you're seeing. This is the same type of browning that happens when you bruise or cut fresh mint leaves — enzymatic and non-enzymatic oxidation of mint polyphenols. On carpet, the brown mint oxidation product responds to dilute white vinegar (1:10 in water) to dissolve the polyphenol complexes, followed by 3% hydrogen peroxide for oxidative bleaching. This sequence (vinegar then hydrogen peroxide) is more effective than hydrogen peroxide alone for polyphenol browning.
My dovga included a small amount of butter stirred in at the end — does that change the treatment?
Butter added to dovga (a traditional enrichment in some Azerbaijani recipes) introduces milk fat (approximately 65% saturated fat) to the spill. Butter fat sets faster than chicken fat or unsaturated vegetable oils, so the dry-absorption step (cornflour or baking soda) should be applied promptly before proceeding with the water-based casein treatment. Apply the cornflour first, then proceed with cold water for casein, then protease enzyme, then warm water for starch, then lipase enzyme for any residual butter fat, then hydrogen peroxide for chlorophyll. The butter addition does not significantly change the overall treatment sequence but adds the lipase enzyme step as a more important step than it would be for butter-free dovga.
What is the correct treatment order for dovga given the competing temperature requirements (cold for casein, warm for starch)?
(1) Blot excess liquid immediately — cold cloth, no rubbing. (2) Pick out any visible chickpeas or rice clumps mechanically. (3) Apply cornflour if butter was used — 5 minutes, vacuum. (4) Cold water blotting — multiple applications to remove as much casein and lactic acid as possible. (5) Protease enzyme — 20 minutes contact, blot. (6) Warm water application (40°C) — now that the protein is treated, warm water for the rice and chickpea starch. Blot. (7) Lipase enzyme if butter was included — 15 minutes, blot. (8) 3% hydrogen peroxide — 10 minutes, blot (addresses herb chlorophyll/pheophytin, mint polyphenol browning). (9) Final cold water rinse and blot dry.