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Sweet Potatoes Stuffed

Baked sweet potatoes filled with mashed potato, egg yolks, cream, and seasonings, topped with butter.

From an old cookbook · modernised transcription
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Why it works: Sweet potato and mustard match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 108 recipes. Both carry guaiacol, which smells smoky, sweet. The science ↓

Sweet Potatoes Stuffed

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.

Bake and prepare

  1. Bake the sweet potatoes at 400°F (200°C) until tender.

  2. Cut each potato in half and trim the ends so they stand upright.

  3. Scoop out the insides, leaving the skins intact.

Make the filling

  1. Mash the potato with the yolks of the hard-boiled eggs.

  2. Mix in cream, salt, pepper, and mustard if desired.

Fill and finish

  1. Fill the potato skins with the mixture.

  2. Top each with a piece of butter.

  3. Bake until well 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 + mustardtop 6% of all pairs
    Smell alikestrong
    Cooked together108 recipes

    Shared aroma: guaiacol (smoky, sweet).

  2. Cream + buttertop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

  3. Pepper + mustardtop 9% of all pairs
    Smell alikemoderate
    Cooked together15,430 recipes

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

  4. Sweet potato + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together1,015 recipes

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

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

    Shared aroma: decanal (soap, orange peel).

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

What each ingredient does

Sweet potatoes
Provide the starchy base for the filling and the shell that holds it upright.
Hard-boiled eggs
Yolks add richness and a smooth, creamy texture to the mashed filling.
Cream
Adds moisture and fat so the mashed potato becomes smooth and spoonable.
Butter
Adds fat and richness on top, helping the surface brown in the oven.

The step that matters

Scoop out the insides, leaving the skins intact. The skins must stay whole to hold the filling. Tearing them lets the mixture leak out while baking, so scoop gently with a spoon and stop short of the skin.

Swap the mustard

The recipe marks mustard as optional. How well each one fits the dish's main ingredients (sweet potato, egg, cream, pepper, butter):

  1. Spinachfits better
  2. Capsicumfits better
  3. Chivefits better
  4. Mustardthe original

Fit is the average pairing score against sweet potato, egg, cream, pepper, 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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