Why it works: Sugar and buttermilk match in chemistry and in kitchens. They rank in the top 9% of all ingredient pairs, and cooks put them together in 2,973 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Dark Cake
Ingredients
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. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare the batter
Preheat your oven to 350°F (175°C).
In a bowl, mix together the sugar, molasses, buttermilk, and butter until well combined.
Add the raisins and egg, and mix thoroughly.
Stir in the baking soda and mixed spices.
Bake
Pour the batter into a greased cake pan and bake for about 30-40 minutes, or until a toothpick comes out clean.
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.
-
Sugar + buttermilktop 9% of all pairsSmell alikestrongCooked together2,973 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Sugar + molassestop 11% of all pairsSmell alikemoderateCooked together9,225 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Molasses + buttermilktop 11% of all pairsSmell alikemoderateCooked together526 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Molasses + raisintop 12% of all pairsSmell alikelowCooked together3,577 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Sugar + raisintop 13% of all pairsSmell alikemoderateCooked together12,481 recipes
Shared aroma: beta-damascenone (apple, rose).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Adds fat for a tender crumb and rich flavor.
- Egg
- Binds the batter and adds structure as it sets.
- Baking soda
- Reacts with the acidic molasses and buttermilk to produce gas that lifts the cake.
- Molasses
- Adds sweetness, dark color, moisture and a deep flavor.
- Buttermilk
- Adds moisture and acidity that activates the baking soda.
The step that matters
Stir in the baking soda and mixed spices. Baking soda starts reacting as soon as it meets the acidic liquids, so the batter should go into the pan and into the oven promptly to keep its rising power.
Swap the raisin
How well each one fits the dish's main ingredients (sugar, molasses, buttermilk, butter, egg):
- Vanillafits about as well
- Raisinthe original
- Figfits less well
- Lemonfits less well
Fit is the average pairing score against sugar, molasses, buttermilk, butter, egg. 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.

Molasses Cookies96 recipes
Molasses Cake90 recipes
Buttermilk Pie12 recipes
Molasses Sponge Cake9 recipes