Stocks & broths
Bouillon
Fond · The clarified, strained liquid extracted from animal bones, cartilage, and connective tissue through prolonged gentle simmering with aromatics. A neutral, full-bodied liquid prized for its body (from dissolved gelatin), flavor depth (from marrow and aromatics), and utility as the universal foundation of classical cooking. Bouillon is not merely water with things in it—it is a precisely constructed extract whose quality determines the quality of every dish built upon it.
The formula
1:1 bones : water
White stock: simmer raw bones. Brown stock: roast bones until caramelized first. Aromatics at 10–15% of bone weight. Example: 2 kg beef bones + 250 g mirepoix (2:1:1 onion:carrot:celery) + 2 L cold water → ~1.5 L finished stock. Reduce by half for concentrated fond de cuisine.
Identity
- Cold-start extraction: bones placed in cold water brought slowly to a simmer maximizes gelatin yield and minimizes bitterness
- Diligent skimming during the first 30 minutes removes coagulated proteins and blood, ensuring crystalline clarity
- Gentle simmer at 85–90°C (never boiling) keeps the liquid clear and prevents bitter compounds from fracturing into the stock
- Aromatics added only after initial skimming prevents their starches from clouding the liquid
- Proper body: a well-made stock when chilled should set to a slight jiggle from dissolved gelatin
Ingredients
| Base | Meat bones (beef, veal, chicken, pork, or game) | Use a mix of marrow and knuckle bones for optimal gelatin and flavor. 2 kg minimum for a usable batch. |
| Liquid | Cold water | Enough to cover bones by 5 cm. Cold start is non-negotiable for proper extraction. |
| Aromatics | Mirepoix (onion, carrot, celery) | Classically 2:1:1 ratio by weight. For 2 kg bones: ~150 g onion, 75 g carrot, 75 g celery. Charactered slightly in brown stocks. |
| Aromatics | Aromatic vegetables (leek, garlic, parsley stems, thyme, bay) | Added in small quantities for finesse, not dominance. |
| Seasoning | Coarse salt | Added only at the end, after straining. Never season during cooking—it prevents proper skimming and creates bitterness. |
| Acid | Tomato purée or wine (for brown stocks only) | Acid helps extract gelatin and adds color. Wine is reduced before adding; tomato is caramelized with roasted bones. |
Method
- 1Place raw or roasted bones in a large stockpot. Cover generously with cold water (5 cm above bones).Cold start maximizes gelatin extraction from collagen. Hot water sets proteins on bone surfaces, reducing yield and clouding the stock.
- 2Bring slowly to a bare simmer over 30–40 minutes. As foam rises, skim vigorously and repeatedly with a wide ladle.Impurities (blood, proteins, albumen) rise with heat. Vigorous early skimming is the only path to clarity. Boiling churns these back into the liquid.
- 3Once the surface is clear of foam, add the mirepoix and any aromatics.Aromatics added too early cause cloudiness from their starches and bitterness from prolonged heat. Adding them after skimming preserves clarity.
- 4Maintain a gentle simmer (85–90°C, small occasional bubbles) for 3–4 hours for white stock, 4–6 hours for brown stock.Low, steady heat extracts collagen into gelatin without fracturing fats into the liquid or creating bitter, cloudy stock.
- 5Strain through a fine-mesh sieve or cheesecloth-lined colander, pressing solids gently to extract remaining liquid.Straining removes all particulate matter that would cause off-flavors or cloudiness. Do not press vigorously or you'll extract bitter compounds from bones.
- 6Cool rapidly in an ice bath. Refrigerate. Remove solidified fat from surface before use.Rapid cooling prevents bacterial growth. Fat removal prevents rancidity and greasy finished dishes.
Techniques that matter
Blanching (for white stocks)
Briefly par-cooking bones in boiling water before draining and starting fresh with cold water removes surface impurities and blood, resulting in a cleaner, clearer stock with less skimming required.
Roasting (for brown stocks)
Roasting bones at 200°C until deeply caramelized develops Maillard reaction compounds that add savory depth, color, and complexity impossible to achieve through simmering alone.
Degreasing
Solidified fat removed after refrigeration prevents rancidity, off-flavors in finished dishes, and ensures the stock's true flavor profile is available for sauces and braises.
Variations & derivatives
Court-bouillonClassical French
Water + wine (or vinegar) + aromatics (onion, carrot, celery, bay, thyme, parsley). Used specifically for poaching fish and shellfish. The acid denatures surface proteins, creating slightly firmer texture and clean flavor.
Fond blancClassical French
Stock made from raw (unroasted) bones only. Pale in color, delicate in flavor. Used as the base for white sauces (velouté) and light-colored soups.
Fond brunClassical French
Stock made from roasted bones, often with tomato. Deep brown color, rich savory flavor from Maillard products. Used for demi-glace, espagnole, and brown sauces.
Fond de volailleFrench
Chicken-specific stock. Lighter body than beef or veal stocks but essential for chicken velouté, chicken soup, and poultry sauces.
BrodoItalian
Italian equivalent. Often made with beef, sometimes with chicken or meaty bones. Typically less aromatized than French stocks; the meat flavor is allowed to speak more directly.
RemouillageClassical French
Rewetting: a second stock made from bones that have already been used once. Weaker and less flavorful, but economical for adding to soups or as cooking liquid for grains.
Used in these dishes
Substitutions
- Bouillon cubes or instant granules → Homemade stock — Commercial products are high in sodium and lack gelatin body. Acceptable only as a last resort for soups; inadequate for sauces that require body and clarity.changes result
- Water alone → Stock — Will not provide body, flavor depth, or gelatin. Finished dishes will lack foundation. Use water only if a recipe specifically calls for it.changes result
- Concentrated fond de cuisine (reduced stock) → Regular-strength stock — Reconstitute by adding equal volume of water. Useful for storage efficiency and ensures stock is always available.
Troubleshooting
Cloudy, murky stock
Simmering too vigorously or boiling during cooking; insufficient skimming; adding aromatics too early → Strain through multiple layers of cheesecloth. For future batches: maintain 85–90°C, skim thoroughly for first 30 minutes, add aromatics only after foam subsides.
Stock lacks body (thin, watery mouthfeel)
Insufficient bones; not enough connective tissue; cooking time too short → Reduce the finished stock by half to concentrate gelatin. For future batches: use more bones, especially knuckle and marrow bones; simmer 4–6 hours minimum.
Bitter flavor
Boiling (which extracts bitter compounds from bones); cooking with salt present; using too many aromatics; bones are old or low-quality → For mildly bitter stock: add a raw peeled potato and simmer 15 minutes—it will absorb some bitterness. For future batches: start cold, never boil, season only at end, use fresher bones.
Greasy finished dishes when using stored stock
Inadequate degreasing before storage; fat oxidation during refrigeration → Always remove solidified fat layer before using. If fat has been absorbed: bring stock to a boil, then whisk in a small amount of cold fat-free stock or water to emulsify the fat into the liquid.