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To Make Mustard

A mustard condiment made by mixing mustard flour with boiling water and salt, then smoothing and storing.

From an old cookbook · modernised transcription
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Why it works: Mustard and flour are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 5,066 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

To Make Mustard

Oven, in the book's wordsA cool oven

Ingredients

Directions

Make the mustard

  1. Gradually mix the mustard flour with boiling water to achieve a proper thickness.

  2. Rub the mixture until perfectly smooth.

  3. Add salt and mix well.

Store

  1. Store in a small jar with a tight lid.

  2. Only pour out as much as will be used soon, wiping the edges daily.

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. Mustard + flourtop 13% of all pairs
    Smell alikemoderate
    Cooked together5,066 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

What each ingredient does

Durham mustard flour
Provides the mustard's pungent flavour and the bulk that thickens into a paste.

The step that matters

Adding the boiling water gradually. Pouring in the water all at once makes lumps that are hard to smooth out. Adding it slowly and rubbing the mixture lets the flour hydrate evenly into a smooth, uniform paste.

“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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