Why it works: Flour and almond are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 8,673 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Scottish Receipt for Shortbread
Ingredients
Directions
The book says “a rather slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the dough
Preheat the oven to 300°F (150°C).
Mix the sugar and fruit well with the flour.
Work in the cold butter until smooth and compact.
Divide the dough into four or more pieces.
Shape and bake
Roll each piece into an oblong cake on a floured surface.
Prick the top with a fork and sprinkle with thinly cut orange and citron.
Press in some large caraway comfits with a rolling pin.
Pinch the edges and place the cakes in floured tins.
Bake for 20 minutes.
The cake is done when it springs back after pressing.
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.
-
Flour + almondtop 5% of all pairsSmell alikemoderateCooked together8,673 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + almondtop 11% of all pairsSmell alikemoderateCooked together9,245 recipes
Shared aroma: 2,3-pentanedione (butter, sweet).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
Flour and butter 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
- All-purpose flour
- Forms the structure of the dough, holding the cakes together as they bake.
- Unsalted butter
- Provides richness and a tender, crumbly texture by coating the flour particles.
- Moist sugar
- Adds sweetness and moisture, and helps the shortbread brown lightly in the oven.
- Citron
- Adds candied fruit flavour and a chewy contrast to the crumb.
- Blanched almonds
- Add nutty flavour and a crunchy texture throughout the cake.
The step that matters
Working in the butter. Cold butter must be worked in just until the dough is smooth and compact. Overworking warms the fat and develops gluten, which makes the shortbread tough instead of short and crumbly.
“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 shortbread 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.
Almond Sponge Cake26 recipes
Almond Custard22 recipes
Almond Wafers22 recipes
Coconut Almond Cake17 recipes