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Preserve

Pocket, or Fish-sauce

A fish sauce made with anchovies, mushroom and walnut catsup, soy sauce, and cayenne pepper.

From an old cookbook · modernised transcription
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Why it works: Mushroom and shallot are a kitchen classic. They rank in the top 4% of all ingredient pairs, and cooks put them together in 1,982 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓

Pocket, or Fish-sauce

Ingredients

Directions

  1. Combine mushroom catsup, walnut catsup, pounded anchovies, pounded shallots, soy sauce, and cayenne pepper in a bottle.

  2. Shake the bottle well before using.

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. Mushroom + shallottop 4% of all pairs
    Smell alikemoderate
    Cooked together1,982 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  2. Walnut + shallottop 6% of all pairs
    Smell alikestrong
    Cooked together440 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  3. Mushroom + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together13,580 recipes

    Shared aroma: 2-nonenal (fatty, green).

  4. Shallot + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together5,898 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  5. Mushroom + walnuttop 12% of all pairs
    Smell alikestrong
    Cooked together763 recipes

    Shared aroma: 2,4-nonadienal (fatty, green).

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

What each ingredient does

Anchovies
Provide a salty, savory umami base that gives the sauce its depth.
Mushroom catsup
Adds deep, savory umami flavor as the sauce's main liquid.
Walnut catsup
Adds rich, savory depth and body as a second main liquid.
Shallots
Contribute a mild aromatic sharpness that rounds out the savory flavors.

Swap the walnut

How well each one fits the dish's main ingredients (mushroom, shallot, sauce, pepper):

  1. Chestnutfits better
  2. Black-eyed peafits better
  3. Beansfits better
  4. Walnutthe original

Fit is the average pairing score against mushroom, shallot, sauce, pepper. 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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