Why it works: Rum and hazelnut work together. They rank in the top 12% of all ingredient pairs, and 24 recipes mention both. Both carry 2-methylbutyraldehyde, which smells malty, chocolate. The science ↓
The recipe
Ingredients
Contains: milk, tree nuts (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Make the fudge
Melt chocolate in top of a double boiler over hot water.
When melted, add sweetened condensed milk; stir, add vinegar, flavoring and nuts. Stir to blend.
Pour into parchment-lined, 9-inch square pan and smooth.
Chill and cut
Chill about 2 hours.
Turn onto cutting board, peel off paper and cut into squares.
Refrigerate in tightly covered container.
This recipe comes from the Recipes Wiki on Fandom and is licensed CC BY-SA 4.0. Our formatting and summaries are shared under the same licence.
Steps grouped into stages for easier reading; the method is the source's own.
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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Rum + hazelnuttop 12% of all pairsAroma overlaplowMentioned together24 recipes
Shared aroma: 2-methylbutyraldehyde (malty, chocolate).
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Chocolate + hazelnuttop 3% of all pairsAroma overlapmoderateMentioned together350 recipes
Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
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Chocolate + rumtop 3% of all pairsAroma overlapstrongMentioned together285 recipes
Shared aroma: isoamyl acetate (banana, fruity).
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Butter + rumtop 5% of all pairsAroma overlapstrongMentioned together1,007 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Chocolate + condensed milktop 5% of all pairsAroma overlaplowMentioned together541 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- White chocolate coating
- Melts to form the fudge base and sets firm when chilled.
- Sweetened condensed milk
- Adds sweetness and creaminess, and helps the fudge set smooth and soft.
- Roasted hazelnuts
- Add crunch and a toasty, nutty flavor that contrasts the smooth fudge.
The step that matters
Melt the chocolate gently over hot water. White chocolate scorches and seizes easily when overheated. Gentle, indirect heat in a double boiler melts it evenly so the fudge stays smooth and glossy.
“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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