Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Portugal 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
Preheat the oven to 350°F (175°C).
Make the batter
In a bowl, beat the butter and sugar until light and fluffy.
Add the eggs one at a time, mixing well after each addition.
Stir in the mace, currants, and flour until combined.
Bake
Pour the batter into pans and bake for about 30-40 minutes or until golden brown.
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.
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.
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mace + curranttop 12% of all pairsSmell alikelowCooked together1,791 recipes
Shared aroma: alpha-pinene (pine, turpentine).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + curranttop 17% of all pairsSmell alikemoderateCooked together7,856 recipes
Shared aroma: isoamyl acetate (banana, pear).
Butter and flour 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
- Butter
- Creaming with sugar traps air, giving the cake a light, tender crumb and rich flavor.
- Sugar
- Sweetens the cake and, creamed with butter, helps create a light, aerated texture.
- Eggs
- Add structure as they set and emulsify the fat, binding the batter together.
- Flour
- Forms the main structure of the cake as its proteins set during baking.
- Currants
- Add pockets of concentrated sweetness and chewy fruit throughout the cake.
The step that matters
Adding the eggs one at a time. Beaten eggs added slowly give the fat and sugar time to emulsify. Adding them too fast can cause the batter to curdle or separate, leading to a coarser, denser crumb.
Swap the mace
How well each one fits the dish's main ingredients (butter, sugar, egg, currant, flour):
- Cinnamonfits better
- Nutmegfits better
- Allspicefits better
- Macethe original
Fit is the average pairing score against butter, sugar, egg, currant, flour. 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.
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