Equipment
Ingredients
Fish Bones
- 1500 g white fish bones and heads, gills and eyes removed, thoroughly rinsed
Aromatic Vegetables
- 15 ml olive oil, cold-pressed
- 150 g yellow onion, thinly sliced
- 150 g leek, white and light green parts only, washed and sliced
- 100 g celery, thinly sliced
- 100 g fennel bulb, thinly sliced
Liquids and Herbs
- 250 ml dry white wine
- 2500 ml water, ice cold
- 10 g fresh parsley stems
- 5 g fresh thyme sprigs
- 1 bay leaf
- 3 g whole black peppercorns
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 223 kcal
- Protein
- 34 g
- Carbohydrates
- 7 g
- Fat
- 3 g
- Fiber
- 1 g
- Sugar
- 3 g
- Sodium
- 133 mg
- Saturated Fat
- 1 g
- Monounsaturated Fat
- 2 g
- Polyunsaturated Fat
- 1 g
- Cholesterol
- 81 mg
- Potassium
- 960 mg
- Calcium
- 72 mg
- Iron
- 1.6 mg
- Magnesium
- 79 mg
- Phosphorus
- 410 mg
- Zinc
- 1.0 mg
- Vitamin A
- 54 mcg
- Vitamin C
- 10 mg
- Vitamin D
- 1.7 mcg
- Vitamin E
- 1.8 mg
- Vitamin K
- 43 mcg
- Vitamin B6
- 0.6 mg
- Vitamin B12
- 1.7 mcg
- Thiamin
- 0.18 mg
- Riboflavin
- 0.16 mg
- Niacin
- 4.2 mg
- Folate
- 39 mcg
- Water
- 549 g
- Alcohol
- 3 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Place the fish bones in a large bowl or sink and rinse them thoroughly under cold running water for 5 minutes. Remove and discard any remaining blood lines, gills, or eyes, as these will make the stock bitter and cloudy.
Heat the olive oil in a large stock pot over medium-low heat. Add the sliced onion, leek, celery, and fennel. Sweat the vegetables, stirring occasionally, until they are soft and translucent but have not taken on any color, about 10 minutes.
Add the rinsed fish bones to the pot and gently stir with the vegetables. Pour in the dry white wine, turn the heat up slightly, and allow the wine to simmer and reduce by half to burn off the alcohol harshness, about 5 minutes.
Pour the ice-cold water over the bones and vegetables. Add the parsley stems, thyme, bay leaf, and black peppercorns. Gradually bring the liquid to a very gentle simmer at 85 to 90 degrees Celsius or 185 to 195 degrees Fahrenheit over medium heat. Do not let it come to a rolling boil.
As the stock heats, impurities and foam will rise to the surface. Use a skimmer or slotted spoon to continuously remove this scum. Maintain a gentle, lazy simmer and cook for exactly 30 minutes. Cooking longer than 45 minutes will extract bitter calcium from the bones.
Remove the pot from the heat. Carefully ladle or gently pour the stock through a fine-mesh strainer lined with dampened cheesecloth into a clean container. Do not press on the solids, as this will cloud the stock. Discard the solids.
Cool the stock rapidly by placing the container in an ice water bath. Once cooled to room temperature, transfer to the refrigerator or freezer.
Chef's Notes
- Always use bones from lean, white-fleshed fish like cod, snapper, or halibut. Avoid oily fish like salmon or mackerel, which will turn the stock rancid and excessively fishy.
- Never boil fish stock vigorously or cook it for more than 45 minutes; unlike meat stocks, prolonged cooking extracts bitter calcium from fish bones and ruins the delicate flavor.
- Start with ice-cold water. Cold water extracts proteins slowly, allowing them to coagulate and rise to the surface for easy skimming.
- Do not use parsley leaves in your bouquet garni; the chlorophyll breaks down and turns the stock an unappealing green-brown color. Stick strictly to stems.
Storage
Refrigerator: 3 days — Store in an airtight container. The stock may become gelatinous when cold, which is a sign of high quality.
Freezer: 6 months — Freeze in usable portions, such as ice cube trays or 250ml deli containers, leaving room for expansion.
Reheating: Bring to a rolling boil 100 degrees Celsius or 212 degrees Fahrenheit for at least 1 minute before using in recipes.
Troubleshooting
The stock is cloudy and opaque.
Cause: The stock was allowed to boil vigorously, emulsifying the fats and impurities into the liquid, or the solids were pressed during straining.
Fix: Cosmetically, it can be clarified using an egg white raft to make a consomme, but for most home applications, a cloudy stock is perfectly fine to use.
Prevention: Maintain a lazy simmer below 90 degrees Celsius and never press the solids when straining.
The stock has a bitter, harsh flavor.
Cause: Gills and eyes were left in the fish heads, or the stock was simmered for longer than 45 minutes.
Fix: Cannot be fixed, but the flavor can be masked by using the stock in heavily seasoned dishes like a spicy tomato-based seafood stew.
Prevention: Thoroughly clean the fish bones, specifically targeting the gills, and strictly adhere to the 30-minute simmer time.
The stock tastes excessively fishy or rancid.
Cause: Oily fish like salmon, mackerel, or trout were used, or the bones were not fresh.
Fix: Cannot be fixed.
Prevention: Use only impeccably fresh bones from lean, white-fleshed fish.
Cultural Context
Fumet de poisson is a cornerstone of classical French cuisine, famously codified by chef Auguste Escoffier. It serves as the refined, foundational backbone for quintessential maritime dishes like bouillabaisse, delicate sauce veloute, and various elegant seafood bisques.
