Stocks & broths
Superior Stock
Fond blanc · A light, clear, flavourful broth produced by gently simmering raw (unroasted) bones with aromatic vegetables. The most versatile and uncoloured of the classical stocks, it serves as the direct liquid base for white sauces, veloutés, clear soups, and risottos, and functions as the blank canvas against which other preparations are built. Its defining quality is clarity and subtlety — it carries flavour without imposing its own.
The formula
1 kg raw bones : 2 L cold water : 150 g white mirepoix (roughly 2:1:1 onion:carrot:celery by weight)
The 2:1 water-to-bone ratio is the classical starting point. The bones provide collagen (gelatin body) and mild flavour; the aromatics provide a subtle background sweetness. Adjust mirepoix upward only if the stock will be heavily reduced; a plain stock should taste of almost nothing — its purpose is to carry, not to dominate.
Identity
- Made from raw, never roasted, bones — hence white, not brown
- Simmered, never boiled — the liquid must tremble, not bubble, to stay clear
- Begins with a cold start: bones submerged in cold water brought slowly to a simmer
- Blanched first, rinsed, then started fresh — this removes blood and impurities that would cloud the stock and introduce off-flavours
- Strained through a fine-mesh sieve with no pressing — squeezing the solids releases bitter compounds
Ingredients
| Base | Raw bones (veal, chicken, or beef) | Veal is the classical first choice for its neutral, sweet flavour and high collagen content. Chicken yields a lighter, more delicate result; beef is used when a more robust foundation is needed. |
| Liquid | Cold water | Always start in cold water. Hot or boiling water causes proteins in the bones to seal on the exterior, trapping blood and impurities inside, which cloud the stock and produce off-flavours. |
| Aromatics | White mirepoix (onion, carrot, celery) | In the classical 2:1:1 ratio by weight. The carrot is optional in some kitchens for a truly neutral stock, but it contributes natural sugar balance. Tomato purée or fresh tomato is often added (30–50 g per litre) for a faint acidity that rounds the flavour. |
| Aromatics | Bouquet garni | Bay leaf, thyme sprig, and flat-leaf parsley stems tied together. Added whole so it can be removed cleanly. Steeps like a tea — never cut fine or it becomes difficult to remove. |
| Seasoning | Coarse salt | Added minimally at the start or omitted entirely. A master stock should be unseasoned; it will be seasoned when used in a sauce or soup. Salting bones before simmering draws out proteins and clouds the liquid. |
Method
- 1Blanch the raw bones: place them in a large stockpot, cover with cold water, bring to a vigorous boil over high heat, and boil for exactly 5 minutes.Boiling causes blood and albumin proteins in the bones to coagulate and rise as grey foam. This purge removes the compounds that would otherwise cloud the finished stock and impart a metallic or iron flavour. It is non-negotiable for a clear result.
- 2Drain the blanched bones immediately and rinse under cold running water. Scrub the pot.The purge water carries away all the coagulated impurities. Rinsing the bones stops the cooking process and prevents carryover from hardening the outer bone surface. A clean pot ensures no burned residue will taint the stock during the long simmer.
- 3Return the rinsed bones to the clean pot. Add cold water at the ratio of 2 L per 1 kg of bones. Bring slowly to a bare simmer over medium-low heat — the surface should tremble with a few slow bubbles breaking occasionally, never a roiling boil.A gentle simmer extracts collagen (which converts to gelatin and gives the stock its silky body) without agitating the liquid enough to make it cloudy. Boiling physically turbulates the liquid, emulsifying fat and proteins into suspension, destroying clarity.
- 4Skim the surface diligently for the first 20–30 minutes as grey-white foam rises, then add the white mirepoix (and tomato if using), and the bouquet garni.The initial foam is residual blood and albumin that escaped during blanching. Removing it before adding aromatics ensures a clean flavour base. Once the mirepoix is added, excessive skimming is unnecessary and would remove aromatic compounds.
- 5Maintain the stock at a bare simmer (85–92 °C) for 3–4 hours for chicken, 4–6 hours for veal, or 6–8 hours for beef. Leave the lid ajar to allow steam to escape, which prevents the liquid from reducing and concentrating.Collagen hydrolysis is time- and temperature-dependent. High heat hardens the outer bone surface and over-extracts bitter compounds from the marrow. An uncovered pot at a steady bare simmer is the condition under which gelatin is fully liberated without flavour degradation.
- 6Strain the finished stock through a fine-mesh conical strainer lined with dampened cheesecloth (or a jelly bag), without pressing or squeezing the solids.Pressing or squeezing the spent bones releases bitter alkaloids from the marrow and tannins from the vegetables into the liquid, ruining a clean-tasting stock. Gravity straining alone yields the clearest result.
- 7Cool the strained stock rapidly in an ice-water bath (bain-marie of ice water) to below 10 °C within 30 minutes, then refrigerate at 0–4 °C.Rapid cooling prevents the stock from spending too long in the temperature danger zone (10–60 °C) where bacteria can proliferate. Properly cooled and refrigerated, the stock will keep safely for 5–7 days.
Techniques that matter
Blanching and purging
The fundamental clarification step for any light-coloured stock. Boiling raw bones forces albumin and blood proteins to coagulate and rise as foam, which is discarded. Skipping this step produces a grey, bitter, foul-smelling liquid.
Bare simmer (85–92 °C)
Controlled temperature extraction. Collagen dissolves into gelatin between 65–75 °C; higher temperatures extract unwanted bitter compounds and cloud the liquid. The gentle agitation of a bare simmer keeps fat emulsified but suspended, allowing it to be skimmed cleanly.
Strain without pressing
Solids retain bitter and astringent compounds (marrow fat, alkaloids from bones, tannin from vegetables). Forcing them through the liquid re-introduces these off-notes. A clean strain preserves the neutral, delicate character that makes the stock a true foundation.
Variations & derivatives
Veal Stock (Fond de veau blanc)French classical cuisine
Made from raw veal bones (ideally knuckle and foot for maximum collagen). Considered the most neutral and versatile of the meat stocks. Used as the base for all classical white sauces (béchamel, velouté, suprême). The gold standard of the classical repertoire.
Chicken Stock (Fond de volaille)French classical cuisine
Made from raw chicken carcasses and necks. Lighter, more delicate, and quicker to make (3–4 hours). The everyday workhorse of professional kitchens. Used for chicken velouté, white sauces, risotto, and poaching liquids.
Brown Stock (Fond brun)French classical cuisine
Identical bones (veal or beef) are roasted at 200 °C for 45–60 minutes before simmering, which caramelises the bone surface and triggers Maillard browning reactions, producing a deep amber colour and rich, toasty flavour. Used as the base for demi-glace, Espagnole, and brown sauces.
Fish Stock (Fumet)French classical cuisine
Made from raw fish bones (sole, turbot, or lean white fish), not from meat bones. Simmered for only 20–30 minutes maximum. Lighter mirepoix (leek, onion, fennel fronds). Used as the base for fish velouté, chaud-froid sauces, and poached fish preparations.
Used in these dishes
Substitutions
- Veal bones → Chicken bones — A reasonable everyday substitute for a lighter, quicker stock, but the body and gelatin quality are noticeably lighter. Chicken stock is insufficient for a classical velouté that requires genuine body.
- Raw bones → Roasted bones (making brown stock) — Roasting produces a fundamentally different product — brown stock with deep, caramelised flavours. It cannot replace a white stock in white sauces, where colour and neutrality are paramount.changes result
- Bouquet garni → Dried herb sachet (bay, thyme, peppercorns) — Acceptable in a home kitchen context, but whole fresh herbs and parsley stems contribute fresher, more volatile aromatics that are desirable in a master stock.
Troubleshooting
Stock is cloudy, turbid, or milky-looking
The stock was boiled at some point during simmering, or bones were not blanched and purged beforehand. Boiling physically emulsifies fat and protein into suspension. → Next time: always blanch bones and maintain a bare simmer (85–92 °C) throughout. To rescue a mildly cloudy stock, pass it through a fine-mesh strainer lined with cheesecloth. Severely clouded stock is unsuitable for classical applications but can be used in rustic soups.
Stock tastes bitter or has an unpleasant iron or metallic flavour
Bones were over-extracted (simmered for too long or at too high a temperature) or were squeezed during straining. The bitterness comes from alkaloids drawn from the bone marrow and surfaces. → Ensure straining is done without pressing. Reduce simmer time for future batches. If bitterness is present, it cannot be fully corrected; the stock can be diluted or used in preparations with strong seasonings that mask the note.
Stock has a strong, dominating vegetable taste that overpowers dishes made from it
Too much mirepoix relative to bones, or mirepoix added too early and simmered for the full duration. The vegetables over-extract their sugars and produce a pronounced sweetness or earthiness. → Use the correct ratio: 150 g mirepoix per 1 kg bones. If the stock is already made, blend it 50/50 with a freshly made, properly proportioned stock, or use it in strongly flavoured preparations where the vegetable notes integrate.
Stock is thin and lacks body even after hours of simmering
Bones lack sufficient connective tissue and cartilage (collagen). Young animals or pre-roasted bones provide less gelatin. Insufficient simmer time also prevents complete collagen hydrolysis. → Add raw veal knuckle bones (high in articular cartilage) or chicken feet. Ensure a full 4–6 hours for veal. A well-made stock should coat the back of a spoon with a light, silky film — a genuine velouté consistency.