Why it works: Flour and semolina match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and 310 recipes mention both. Both carry isobutyraldehyde, which smells malty, green. The science ↓
The recipe
Makes 12Ingredients
Contains: milk, wheat (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Method written by CompKitchen from the ingredient list. Not the original author's method, not kitchen-tested.
Preheat the oven to 160°C (325°F). Line a 20 cm (8 in) square tin with baking paper.
Rub the butter into the plain flour, caster sugar and semolina until it resembles fine crumbs, then press the mixture together into a smooth dough.
Press the dough evenly into the tin, prick all over with a fork, and chill for 30 minutes.
Bake the shortbread for 40 to 45 minutes until pale golden. Leave it in the tin to cool completely.
Gently melt the butter fudge pieces in a small pan over low heat, stirring until smooth. Pour over the cooled shortbread and chill for 20 minutes to set.
Melt the dark chocolate in a heatproof bowl over a pan of simmering water, stirring until smooth. Spread over the fudge layer.
Chill for about 30 minutes until the chocolate is set. Dust lightly with gold luster dust if using, then cut into 12 pieces.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.
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Flour + semolinatop 2% of all pairsAroma overlapstrongMentioned together310 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + chocolatetop 6% of all pairsAroma overlapmoderateMentioned together15,399 recipes
Shared aroma: guaiacol (smoky, sweet).
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Flour + buttertop 6% of all pairsAroma overlaplowMentioned together122,858 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + chocolatetop 8% of all pairsAroma overlapstrongMentioned together10,480 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Sugar + buttertop 10% of all pairsAroma overlapmoderateMentioned together98,096 recipes
Shared aroma: guaiacol (smoky, sweet).
Flour and butter share little aroma chemistry, yet 122,858 recipes mention both: they likely work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
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