Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Bacon Rolls
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 dough
Mix mashed potatoes, melted butter, and beaten egg in a bowl.
Add flour gradually until a paste forms.
Flour a surface and roll out the paste.
Shape and bake
Cut into pieces about 8 inches long and 4 inches wide.
Spread thin slices of bacon over each piece.
Roll them up and place on a baking sheet.
Bake in a preheated oven at 400°F (200°C) until golden.
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.
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Potato + flourtop 15% of all pairsSmell alikemoderateCooked together5,355 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mashed potatoes
- Provide the bulk and soft, moist body of the filling-like dough.
- Melted butter
- Adds fat for richness and a tender texture.
- Beaten egg
- Binds the mixture so it holds together when shaped.
- Flour
- Gives the paste enough structure to roll out and shape.
- Bacon
- Adds salty, savory flavor and fat that crisps and browns during baking.
The step that matters
Adding the flour gradually. Too much flour at once can make the paste stiff and dense, while adding it slowly lets you reach a workable, tender dough that rolls without tearing.
Swap the potato
How well each one fits the dish's main ingredients (butter, egg, flour):
- Chivefits better
- Shallotfits better
- Leekfits better
- Potatothe original
Fit is the average pairing score against butter, egg, flour. 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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