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Duchess Potatoes

A baked potato dish shaped into decorative forms with butter, salt, and egg yolks.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Potato and butter are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 6,456 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Duchess Potatoes

Oven, in the book's wordsA hot oven

Ingredients

Directions

The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

  1. Preheat oven to 400°F (200°C).

  2. In a bowl, combine hot riced potatoes, butter, salt, and beaten egg yolks.

Shape and bake

  1. Using a pastry bag and tube, shape the mixture into baskets, pyramids, crowns, leaves, or roses.

  2. Brush the shapes with beaten egg diluted with water.

  3. Bake in the preheated oven until golden 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 + buttertop 13% of all pairs
    Smell alikemoderate
    Cooked together6,456 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  2. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  3. Potato + eggtop 29% of all pairs
    Smell alikemoderate
    Cooked together4,978 recipes

    Shared aroma: (e)-2-octenal (fatty, green).

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

What each ingredient does

Potatoes
Form the bulk of the mixture and give the piped shapes their body.
Egg yolks
Bind the mixture and enrich it, helping the shapes hold their form.
Butter
Adds richness and moisture, softening the potato for smooth piping.

The step that matters

Brush the shapes with egg wash. Beaten egg diluted with water coats the piped shapes and browns them in the oven. Brushing unevenly leaves pale patches, so coat every surface lightly and evenly.

Swap the potato

How well each one fits the dish's main ingredients (butter, egg):

  1. Asparagusfits better
  2. Chivefits better
  3. Leekfits about as well
  4. Potatothe original

Fit is the average pairing score against butter, egg. 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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