Why it works: Sugar and molasses are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 9,225 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Ginger Cookies
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.
Dissolve the leaveners
Dissolve the alum in ⅔ cup of boiling water.
Dissolve the baking soda in the same amount of boiling water.
Make the dough
In a large bowl, mix the butter, sugar, molasses, dissolved alum, and dissolved baking soda.
Add ginger to taste and mix well.
Bake
Drop spoonfuls of the dough onto a baking sheet.
Bake at 350°F (175°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.
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 + molassestop 11% of all pairsSmell alikemoderateCooked together9,225 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Molasses + gingertop 14% of all pairsSmell alikelowCooked together4,116 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Sugar + gingertop 17% of all pairsSmell alikelowCooked together14,054 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
-
Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Butter + gingertop 26% of all pairsSmell alikemoderateCooked together7,152 recipes
Shared aroma: trans-2-decenal (waxy, orange).
Sugar and ginger barely smell alike, yet cooks put them together in 14,054 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
- Butter
- Adds fat that gives the cookies a tender, rich texture.
- Sugar
- Sweetens the dough and helps the cookies brown as they bake.
- Molasses
- Adds moisture, sweetness, deep colour and a strong flavour to the cookies.
- Baking soda
- Reacts with the acidic molasses and alum to release gas that lifts the dough.
- Alum
- Works with the baking soda to create additional lift and a crisper texture.
The step that matters
Dissolve the alum and baking soda fully in boiling water. Fully dissolved leaveners spread evenly through the dough, so gas forms throughout rather than in pockets. Undissolved granules can leave bitter spots or uneven rising.
Swap the ginger
How well each one fits the dish's main ingredients (butter, sugar, molasses):
- Cinnamonfits better
- Gingerthe original
- Nutmegfits about as well
- Clovefits about as well
Fit is the average pairing score against butter, sugar, molasses. 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.
More ginger cookies recipes
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
Ginger Cake93 recipes
Molasses Cake90 recipes
Soft Ginger Bread85 recipes