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Sauces and finishing · intermediate

Stock making

Also: broth, fond, yakhni

Extracting flavour and gelatin from bones, meat, vegetables or fish by long, gentle simmering in water.

25 recipes use it

What it is

Stocks are flavoured liquids made by simmering bones, trimmings, vegetables and aromatics. White stocks use raw bones; brown stocks use roasted bones and vegetables. Yakhni in Indian and Kashmiri cooking is a spiced meat stock used for pulao and gravies; dashi is a quick Japanese stock of kombu and bonito.

Why cooks use it: Stock gives sauces, soups, pulaos and gravies depth and body that water cannot.

The science

Collagen in bones and connective tissue dissolves as gelatin over hours, giving body. Starting in cold water lets soluble proteins coagulate slowly and rise as scum that can be skimmed. Boiling hard emulsifies fat and fine particles into the liquid, making it cloudy and greasy.

How proteins set when cookedEvaporation and reductionFood-safety temperatures

Step by step

  1. Rinse bones; roast them first at about 200–220 °C for brown stock.

  2. Cover with cold water by a few centimetres and bring slowly to a simmer.

  3. Skim off the grey scum that rises during the first 20–30 minutes.

  4. Add vegetables and aromatics (onion, carrot, celery, bay, peppercorns; or whole Indian spices for yakhni).

  5. Simmer gently, uncovered or partly covered: fish 20–30 minutes, vegetable 45–60 minutes, chicken 2–4 hours, beef or veal 6–8 hours.

  6. Strain through a fine sieve, cool quickly and lift off the fat once chilled.

Heat and timing

  • Stock making 85–95 °C · A bare simmer, never a rolling boil.

Time: 20 minutes (fish) to 8 hours (beef/veal).

How you know it’s right

  • Clear, golden liquid
  • Chilled stock sets to a jelly (good gelatin content)
  • Only occasional bubbles

Common mistakes

  • Boiling hard (cloudy, greasy stock)
  • Salting stock that will be reduced
  • Simmering fish bones too long (bitter, chalky)
  • Leaving a pot of stock to cool on the stove overnight

Troubleshooting

Cloudy stock
Simmer more gently and skim; clarify with egg whites if clarity matters.
Thin, watery stock
Use more bones (especially joints, wings or feet) and less water; reduce after straining.

Restaurant DNA

How professionals do it

Restaurant kitchens make stock in large steam-jacketed kettles or stockpots daily or weekly, cool it in ice baths or blast chillers, and reduce part of it to concentrated glace.

At home

Save and freeze chicken carcasses and vegetable trimmings until you have enough; a pressure cooker makes good stock in about an hour.

General professional practice — not any particular restaurant’s recipe.

Food safety

  • Cool stock quickly: divide into shallow containers or use an ice bath so it passes through the 5–60 °C danger zone fast; refrigerate within 2 hours.
  • Refrigerated stock keeps 3–4 days; boil before reuse; freeze for longer.

Practise it

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