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Sweet Potato Purme Baked

A baked sweet potato purée with butter, milk, egg, and salt, forming a soft dough with a brown crust.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Sweet Potato Purme Baked

Ingredients

Directions

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare the purée

  1. Preheat the oven to 400°F (200°C).

  2. Bake the sweet potatoes for about 1 hour, squeezing them with a cloth until perfectly soft.

  3. Peel the sweet potatoes and mash them through a colander.

  4. Add a large tablespoon of butter and enough milk to achieve a soft dough consistency.

  5. Add a pinch of salt and mix well.

Glaze and bake

  1. Butter a pie plate or a sheet of tin and arrange the purée in a neat mound.

  2. Beat the egg slightly and brush it over the purée.

  3. Bake in the oven for 20 to 30 minutes until a good brown crust forms on top.

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. Milk + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

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

  2. Sweet potato + milktop 15% of all pairs
    Smell alikemoderate
    Cooked together596 recipes

    Shared aroma: 4-heptenal (creamy, biscuit).

  3. Egg + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  4. Egg + milktop 18% of all pairs
    Smell alikemoderate
    Cooked together88,785 recipes

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

  5. Sweet potato + buttertop 20% of all pairs
    Smell alikemoderate
    Cooked together1,491 recipes

    Shared aroma: 2,3-pentanedione (butter, sweet).

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

What each ingredient does

Sweet potatoes
Provide the bulk of the purée, with starch and sugars that soften when baked and sweeten the dish.
Egg
Brushed on top, it helps the surface brown and form a glossy crust in the oven.
Butter
Adds fat and richness, giving the purée a smoother texture and flavour.
Milk
Adds moisture so the mashed potato reaches a soft, workable consistency.

The step that matters

Bake the sweet potatoes until perfectly soft. Mashing sweet potatoes that are not fully cooked leaves them fibrous and lumpy, because the starch must gelatinise fully to give a smooth purée.

Swap the sweet potato

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

  1. Potatofits better
  2. Asparagusfits better
  3. Chivefits about as well
  4. Sweet potatothe original

Fit is the average pairing score against egg, milk, butter. 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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