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Soup

Fish Stock

A stock made from small fish, onions, tomatoes, herbs, and water, simmered and strained.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Clam and crab share more aroma than cooks usually use. They rank in the top 8% of all ingredient pairs, and cooks put them together in 17 recipes. Both carry 2,3,5-trimethylpyrazine, which smells cocoa, roasted. The science ↓

Fish Stock

Ingredients

Directions

Prepare the stock

  1. Melt the butter in a saucepan over medium heat.

  2. Add the sliced onion and tomatoes, then the assorted small fish.

  3. Cook until the onions are well browned.

  4. Add the sweet herbs, salt, pepper, and enough water for stock.

  5. Simmer for 30 minutes.

Strain and reduce

  1. Pound the mixture with a wooden pestle.

  2. Strain the mixture.

  3. Return the strained stock to the heat.

  4. Cook until it jellies.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Clam + crabtop 8% of all pairs
    Smell alikestrong
    Cooked together17 recipes

    Shared aroma: 2,3,5-trimethylpyrazine (cocoa, roasted).

  2. Onion + tomatotop 8% of all pairs
    Smell alikemoderate
    Cooked together20,633 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  3. Fish + oystertop 9% of all pairs
    Smell alikemoderate
    Cooked together496 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  4. Butter + crabtop 10% of all pairs
    Smell alikemoderate
    Cooked together812 recipes

    Shared aroma: nonanal (fat, citrus).

  5. Oyster + crabtop 11% of all pairs
    Smell alikemoderate
    Cooked together95 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Sweet butter
Starts the browning and carries flavour from the onions into the stock.
Onion
Browns to add sweetness and savoury depth to the stock.
Tomatoes
Add acidity and body that balance the richness of the fish.
Assorted small fish
Release gelatin and savoury flavour as they simmer, giving the stock its body.
Sweet herbs
Add aromatic flavour that infuses the stock during simmering.

The step that matters

Cook until it jellies. Reducing the strained stock concentrates its natural gelatin until it sets when cooled. Cooking too briefly leaves a thin liquid, while overcooking can make it overly salty and dense.

Swap the tomato

How well each one fits the dish's main ingredients (butter, onion, fish, oyster, clam, smelt, crab):

  1. Potatofits better
  2. Horseradishfits better
  3. Capsicumfits about as well
  4. Tomatothe original

Fit is the average pairing score against butter, onion, fish, oyster, clam, smelt, crab. Candidates are from the same food group and used in at least 100 recipes.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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