Why it works: Flour and raisin match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 9,075 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Oatmeal Gems
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
Preheat the oven to 350°F (175°C).
Make the batter
In a large bowl, mix together the brown sugar and shortening until well combined.
Add the beaten eggs and milk, and stir until smooth.
In another bowl, combine the rolled oats, flour, baking soda, baking powder, raisins, cinnamon, and nuts.
Gradually add the dry ingredients to the wet mixture, stirring until just combined.
Spoon the batter into gem pans or drop onto a large baking pan.
Bake
Bake until golden brown, about 20-25 minutes.
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 + raisintop 1% of all pairsSmell alikestrongCooked together9,075 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Raisin + cinnamontop 1% of all pairsSmell alikemoderateCooked together5,390 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
-
Oats + cinnamontop 6% of all pairsSmell alikemoderateCooked together1,394 recipes
Shared aroma: alpha-pinene (pine, turpentine).
-
Flour + cinnamontop 9% of all pairsSmell alikemoderateCooked together17,341 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Milk + cinnamontop 10% of all pairsSmell alikemoderateCooked together12,655 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Brown sugar
- Adds sweetness and moisture, and helps the gems brown and stay soft.
- Shortening
- Provides fat that tenderizes the crumb and carries the creamed sugar.
- Eggs
- Bind the batter and add structure as the gems set in the oven.
- Rolled oats
- Give chewy body and a hearty texture to the gems.
- Flour
- Provides the main structure that holds the oats and raisins together.
- Baking soda
- Reacts with the acidic milk or buttermilk to help the gems rise and brown.
The step that matters
Stirring in the dry ingredients. Mixing only until just combined keeps the gems tender, because overworking the flour develops gluten and makes the texture tough.
Swap the nuts
The recipe marks nuts as optional. How well each one fits the dish's main ingredients (sugar, egg, milk, oats, flour, raisin, cinnamon):
- Almondfits better
- Flaxseedfits better
- Chestnutfits better
- Nutsthe original
Fit is the average pairing score against sugar, egg, milk, oats, flour, raisin, cinnamon. 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.

Cinnamon Rolls71 recipes
Cinnamon Cake42 recipes
White Cake431 recipes
Pound Cake373 recipes