Name: Sweet Potato Puffs
Ingredients: 2 medium sweet potatoes; ¼ teaspoon coarse sea salt; 2 tablespoons sugar; 2 tablespoons butter; ¼ teaspoon black pepper

Why it works: Sweet potato and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 1,015 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Sweet Potato Puffs

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

Boil sweet potatoes in salted water until tender.
Remove skins and mash the sweet potatoes.
Stir in sugar, butter, salt, and pepper.

Bake

Transfer to a baking dish and brown in the oven at 400°F (200°C).

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.

Sweet potato + peppertop 11% of all pairs

Smell alikemoderate

Cooked together1,015 recipes

Shared aroma: 2-nonenal (fatty, green).
Sweet potato + sugartop 17% of all pairs

Smell alikemoderate

Cooked together1,151 recipes

Shared aroma: 2-nonenal (fatty, green).
Sugar + buttertop 17% of all pairs

Smell alikemoderate

Cooked together98,233 recipes

Shared aroma: guaiacol (smoky, sweet).
Sweet potato + buttertop 20% of all pairs

Smell alikemoderate

Cooked together1,491 recipes

Shared aroma: 2,3-pentanedione (butter, sweet).
Butter + peppertop 21% of all pairs

Smell alikemoderate

Cooked together85,593 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).

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 puffs and their soft, starchy structure once mashed.
Butter: Adds fat for richness and a smooth, silky texture.
Sugar: Adds sweetness and helps the surface brown in the oven.