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Dessert

Louisville Sweet Potatoes

A baked sweet potato dish layered with sugar and butter, finished with a splash of water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Sweet potato and sugar are a kitchen classic. They rank in the top 17% of all ingredient pairs, and cooks put them together in 1,151 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Louisville Sweet Potatoes

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

  1. Boil the sweet potatoes, then remove the skin and slice them lengthwise.

Layer and bake

  1. In a baking dish, layer the potatoes, sprinkling sugar and a little butter between each layer.

  2. Continue layering until the dish is filled, then add a little water.

  3. Bake in the oven at 400°F (200°C) until lightly browned.

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. Sweet potato + sugartop 17% of all pairs
    Smell alikemoderate
    Cooked together1,151 recipes

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

  2. Sugar + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. 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
Provides the bulk and starchy body that forms the layers.
Sugar
Adds sweetness and helps the top brown in the oven.
Butter
Adds fat and richness that keeps the layers moist and flavorful.

Swap the sweet potato

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

  1. Sweet potatothe original
  2. Leekfits about as well
  3. Potatofits about as well
  4. Capsicumfits less well

Fit is the average pairing score against sugar, 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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