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Onion Gruel

A simple onion gruel made with sliced onion, bran or rolled wheat, salt, and milk, simmered and served hot.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Wheat and milk are a kitchen classic. They rank in the top 6% of all ingredient pairs, and cooks put them together in 2,418 recipes. Both carry (e,z)-2,6-nonadienal, which smells cucumber, melon. The science ↓

Onion Gruel

Ingredients

Directions

  1. In a pot, combine the sliced onion, bran or rolled wheat, and salt.

  2. Add the milk and bring to a boil.

  3. Reduce heat and simmer for 15 minutes.

  4. Serve hot, preferably before bedtime.

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. Wheat + milktop 6% of all pairs
    Smell alikemoderate
    Cooked together2,418 recipes

    Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).

  2. Onion + wheattop 14% of all pairs
    Smell alikemoderate
    Cooked together858 recipes

    Shared aroma: hexanal (green, grassy).

  3. Onion + milktop 20% of all pairs
    Smell alikemoderate
    Cooked together13,418 recipes

    Shared aroma: hexanal (green, grassy).

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

What each ingredient does

Onion
Softens as it simmers, adding savory sweetness and aroma to the milk.
Milk
Forms the liquid base, and its proteins thicken gently as it simmers.
Bran or rolled wheat
Adds body and a grainy texture as it absorbs liquid and softens.

The step that matters

Simmering the milk. Milk can scorch or boil over if heat is too high. Reducing the heat before simmering keeps the milk gentle, prevents a burnt layer on the bottom, and lets the grains soften evenly.

Swap the onion

How well each one fits the dish's main ingredients (wheat, milk):

  1. Potatofits better
  2. Sweet potatofits better
  3. Tomatofits better
  4. Onionthe original

Fit is the average pairing score against wheat, milk. 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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