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Potato-pudding, to Go Below a Roast

A mashed potato mixture baked under a roast to absorb drippings.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Potato and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Potato-pudding, to Go Below a Roast

Ingredients

Directions

  1. Mash the boiled potatoes with milk, salt, pepper, and onion if using.

  2. Dish the mixture and score the top.

  3. Place it below the roast to catch the drippings and brown.

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. Potato + oniontop 3% of all pairs
    Smell alikemoderate
    Cooked together9,023 recipes

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

  2. Potato + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together8,305 recipes

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

  3. Potato + milktop 9% of all pairs
    Smell alikemoderate
    Cooked together3,611 recipes

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

  4. Pepper + oniontop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

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

  5. Milk + oniontop 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

Potatoes
Provide the starchy body that holds the pudding together and gives a soft, fluffy texture.
Milk
Adds moisture and richness, softening the mash and contributing milk sugars that help it brown.

The step that matters

Placing it below the roast. The top must be fairly dry to brown rather than steam. Scoring the surface adds more area to brown, and catching the drippings adds fat that encourages browning and flavour.

Swap the onion

The recipe marks onion as optional. How well each one fits the dish's main ingredients (potato, milk, pepper):

  1. Capsicumfits better
  2. Carrotfits better
  3. Tomatofits better
  4. Onionthe original

Fit is the average pairing score against potato, milk, 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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