Stocks & broths
Supreme Stock
Fond blanc de volaille · Supreme stock is a classical white chicken stock — a clear, pale, fat-free broth made from raw chicken bones, aromatics and cold water, simmered gently to extract collagen into long-chain gelatin and coax mild savoriness from the meat. It is the foundational liquid of classical French cooking, not a finished broth but a precision building block for sauces, soups, risottos and braises. Unlike brown stock, it is never roasted before simmering; the paleness is structural, not incidental — it defines the flavor profile and the sauces it builds.
The formula
1 kg bones : 2 L water
Classic Escoffier ratio yields ~1.8–2 L per kg of raw bones. Submerge aromatics just below the surface — never by more than 2–3 cm. Strain through a fine-mesh china cap lined with damp cheesecloth for a crystal-clear result.
Identity
- Never boiled — a rolling boil churns fat into the liquid as white haze and stresses aromatics into bitter notes
- Never acidified with tomato or wine — that creates a brown stock; lemon or white wine clouds the liquid and breaks the pale color convention
- Bones and meat start in cold water, are brought to a simmer, and are skimmed clean — this removes blood proteins and impurities that would cloud the stock
- Strained through fine cheesecloth into a cold container to prevent continued cooking and bacterial bloom
- Simmered 3–4 hours uncovered at a bare whisper (82–88 °C surface)
Ingredients
| Base | raw chicken bones (carcasses, necks, backs, wing tips) | Use raw, never roasted. 60–70% by weight of total stock ingredients. More meaty pieces (necks, wings) add flavor; carcasses alone are lean. |
| Liquid | cold water | Always start in cold water; gradual heating denatures surface proteins gently rather than locking them into cloudy clots. |
| Aromatics | mirepoix (onion, carrot, celery) | Ratio 2:1:1 by weight (onion : carrot : celery). Use 75–150 g per kg of bones. Root vegetables contribute subtle sweetness; carrot adds faint color which deepens slightly during long simmer — this is acceptable. |
| Aromatics | leek (white part) | 40–50 g per kg of bones. Adds mild sweetness and depth without the aggressive allium bite of onion alone. |
| Aromatics | bouquet garni (bay, thyme, parsley stems) | Classical aromatics: 1 bay leaf, 2–3 sprigs thyme, 4–5 parsley stems, optional celery leaf. Enclose in leek green or cheesecloth for easy removal. Never add black peppercorns at the start — they turn bitter during extended simmering. |
| Seasoning | kosher salt | Lightly season at the end of cooking, never at the start. Seasoning too early draws proteins to the surface and can interfere with extraction. |
Method
- 1Place raw chicken bones and meat in a large stockpot, cover completely with cold water by 5–8 cm.Cold start ensures gradual protein denaturation rather than surface coagulation; proteins set on the surface rather than dispersing into the liquid as haze.
- 2Bring to a full boil over high heat, then immediately reduce to a bare simmer. Skim the gray foam that rises vigorously for the first 10–15 minutes.The foam is denatured blood serum proteins, myoglobin and connective tissue albumin — the primary clouding agents. Removing it completely is what separates a clear stock from a cloudy one.
- 3Add mirepoix, leek and bouquet garni. Maintain a bare simmer (82–88 °C, occasional bubble) for 3–4 hours, uncovered.Extended gentle heat hydrolyzes collagen (30–50% yield at 4 h) into long-chain gelatin that gives body and mouthfeel. A hard boil churns fat into the liquid, emulsifies it as white haze and stresses the aromatics into bitter, acrid notes.
- 4Strain through a fine-mesh china cap lined with a double layer of damp cheesecloth into a clean, cold container.Cheesecloth removes fine particulate matter and fat globules. Straining into cold container stops cooking immediately and prevents bacterial growth during cooling.
- 5Cool to room temperature within 2 hours, then refrigerate. When cold, remove solidified fat layer (white fat cap) with a spoon or by peeling.Fat is insoluble and would float as greasy droplets in finished sauces. Removing it cold is effortless; warm stock emulsifies fat and makes removal impossible without a fat separator.
Techniques that matter
Blanching and skimming
The initial cold-to-boil transition and vigorous skimming of albumin foam is the single most critical step for clarity. A single pass is never enough — return to the pot every few minutes during the first 20 minutes.
Bare simmer (85 °C)
At this temperature range, collagen hydrolysis proceeds efficiently (optimal around 80–90 °C) while Maillard browning and lipid oxidation are suppressed. Above 95 °C, caramelization of mirepoix sugars begins and flavor shifts toward brown-stock character.
Cold-strain and cold-degrease
Cooling before straining and degreasing is not optional — it is the mechanical principle by which fat (solidified, MPt 33–40 °C for chicken fat) separates from aqueous gelatin. Hot degreasing requires a fat separator and still leaves traces.
Reduction to glace
The glace de volaille (chicken glace) is the concentrated, reduced form — reducing 1 L of supreme stock to ~120–150 g yields a syrupy, intensely flavored glaze used to finish sauces and enrich flavor in the pan.
Variations & derivatives
Glace de volailleClassical French
Reduce finished supreme stock by 80–85% over medium heat until syrupy and nappe (coats a spoon). Used as a flavor base and glossy finish in sauces such as suprême or in meat pan reductions.
Fumet de volailleFrench classical
A more aromatic, slightly reduced chicken stock fortified with white wine and mushroom trim (stems, shells). The wine is added at the start of the simmer, not reduced in advance. Used as a poaching liquid for delicate fish and poultry.
Consommé baseClassical French
Supreme stock is the starting liquid for a consommé. It is clarified with a raft of egg whites, lean ground chicken, tomato and mirepoix — a secondary clarification step on top of the initial clarity achieved through careful skimming.
Asian chicken stockEast Asian (Japanese/Chinese)
In Japanese dashi-influenced practice, chicken carcasses are parboiled briefly, then simmered with a halved knob of ginger and green onion. Less mirepoix, no bouquet garni, shorter 1.5–2 h simmer. Lighter, cleaner, used for noodle soups and as a rice cooking liquid.
Used in these dishes
Substitutions
- Supreme stock → Good-quality commercial chicken broth — Acceptable only as an emergency substitute for soups and braises. Commercial broths are salted, seasoned and often contain preservatives that alter flavor profile and prevent further reduction to glace.changes result
- Chicken carcasses → Rotisserie chicken bones + raw wings — Rotisserie bones contribute intense roasted flavor but shift the stock toward brown-stock character. Use only in a pinch and reduce simmer time to 2–2.5 h; the caramelized Maillard compounds are already extracted.
- Bouquet garni → Dried thyme + bay leaf + black peppercorns tied in cheesecloth — Functional equivalent. Fresh thyme stems work better than dried — dried thyme can turn bitter and dusty in extended simmering. Reduce dried quantity by half.
Troubleshooting
Stock is cloudy, milky, opaque
Hard boil during simmering; insufficient initial skimming; bones not blanched before use; stock was never strained through cheesecloth → Return stock to a pot, bring to a boil, whisk in a beaten egg white (per 2 L) and simmer 5 minutes — the whites will coagulate into a raft that traps suspended particles. Strain through cheesecloth. For future batches: never boil, skim every 5 minutes for the first 20 minutes.
Stock tastes flat, watery, of nothing
Too few bones relative to water (diluted); bones were previously exhausted (already used in a first stock); insufficient simmer time to hydrolyze collagen → Reduce finished stock by one-third over medium heat — concentration intensifies both gelatin body and savory flavor. If bones were pre-exhausted, there is no remedy short of starting fresh; chicken carcass bones yield optimally only once.
Stock smells or tastes of sulfur (rotten egg)
Overcooked or spoiled chicken; excessive use of brassica vegetables (cabbage, too much leek); insufficient initial blanching of bones → Discard and start fresh. Sulfur compounds from overcooked protein and cruciferous vegetables are not removable by filtering — they are chemically bound to the proteins. Always smell bones before use and blanch before simmering.
Greasy sheen or fat droplets visible in finished sauce made from the stock
Fat not fully removed before use; hot stock was degreased but fat re-emulsified during sauce reduction → Always remove fat cap when stock is fully cold (refrigerated overnight if needed). In finished sauces, if fat reappears, use a shallow ladle to skim it off the surface as it rises during reduction — never shake or whisk the sauce vigorously.