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Fish Stock

A savory liquid made by simmering fish, onions, tomatoes, herbs, and seasonings.

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

  1. In a saucepan, melt the butter over medium heat.

  2. Add the sliced onion and cook until browned.

  3. Stir in the sliced tomatoes and assorted small fish, and cook together until the onions are well browned.

  4. Add the sweet herbs, salt, pepper, and enough water to cover the ingredients.

  5. Simmer for 30 minutes.

  6. Pound the mixture with a wooden pestle.

  7. Strain the stock and return it to the heat until it thickens to a jelly-like consistency.

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

Assorted small fish
Provides the main savory, briny flavor and body of the stock.
Onion
Browning builds sweetness and savory depth in the base.
Tomatoes
Adds acidity and moisture that help balance the rich fish flavor.
Sweet butter
Carries the aromatics and adds richness to the initial sauté.

The step that matters

Browning the onions. Cooking the onions until well browned develops deeper, sweeter flavors through the Maillard reaction. Pale onions leave the stock tasting flat and raw.

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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