Why it works: Flour and nutmeg are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 18,623 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Buttermilk Pie
makes three piesIngredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the filling
Preheat the oven to 350°F (175°C).
In a bowl, mix the egg yolks, sugar, flour, and baking soda.
Add the butter and buttermilk, and mix until smooth.
Flavor the mixture with nutmeg, lemon, or vanilla.
Bake and serve
Pour the mixture into pie crusts to make three pies.
Top with meringue and brown slightly in the oven.
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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Flour + nutmegtop 8% of all pairsSmell alikemoderateCooked together18,623 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + buttermilktop 8% of all pairsSmell alikemoderateCooked together3,721 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Sugar + buttermilktop 9% of all pairsSmell alikestrongCooked together2,973 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
Flour and butter 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
- Egg yolks
- Add richness and help the filling thicken and set as it bakes.
- Flour
- Thickens the filling so it sets into a sliceable custard rather than runny.
- Buttermilk
- Adds tang and moisture, giving the filling its characteristic soft texture.
- Sugar
- Sweetens the filling and helps give it a tender, smooth texture.
- Baking soda
- Reacts with the acidity of buttermilk to lighten the filling and aid browning.
- Butter
- Adds fat for a richer flavor and smoother, more tender filling.
The step that matters
Mix the filling until smooth. Thorough mixing distributes the flour and baking soda evenly, so the filling sets uniformly and doesn't develop pockets of starch or uneven rise and texture.
Swap the nutmeg
How well each one fits the dish's main ingredients (egg, sugar, flour, butter, buttermilk):
- Cinnamonfits about as well
- Nutmegthe original
- Jalapenofits about as well
- Capersfits less well
Fit is the average pairing score against egg, sugar, flour, butter, buttermilk. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.

White Cake431 recipes
Pound Cake373 recipes
Orange Bundt Cake349 recipes
Spice Cake344 recipes