Why it works: Molasses and ginger are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 4,116 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Spruce Beer
Ingredients
Directions
Boil 2 quarts of water.
In a large bowl, combine the boiling water with molasses, beaten eggs, and yeast.
If using flavoring oils, add 50 drops now; otherwise, mix in the sassafras, spruce, and wintergreen.
For ginger flavor, boil the bruised ginger root and hops in 1 gallon of water for 30 minutes, then strain and add to the mixture.
Let the mixture stand for 2 hours.
Bottle the mixture, ensuring to use yeast as needed.
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.
-
Molasses + gingertop 14% of all pairsSmell alikelowCooked together4,116 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Ginger + hopstop 24% of all pairsSmell alikelowCooked together3 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Egg + gingertop 33% of all pairsSmell alikelowCooked together7,337 recipes
Shared aroma: (e)-2-octenal (fatty, green).
-
Molasses + eggtop 34% of all pairsSmell alikelowCooked together6,879 recipes
-
Molasses + hopstop 41% of all pairsSmell alikelowCooked together5 recipes
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Molasses
- Provides sweetness and the sugar that the yeast ferments into alcohol and carbonation.
- Yeast
- Ferments the sugars, producing carbonation and alcohol as the beer develops.
- Eggs
- Add protein and body to the liquid, helping it hold a lighter foam.
Swap the ginger
How well each one fits the dish's main ingredients (molasses, egg, hops):
- Cinnamonfits about as well
- Gingerthe original
- Nutmegfits less well
- Clovefits less well
Fit is the average pairing score against molasses, egg, hops. 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.

Ginger Pop22 recipes
Ginger Wine12 recipes
Ginger Beer11 recipes
Ginger Tea9 recipes