Why it works: Sauce and horseradish work together. They rank in the top 6% of all ingredient pairs, and 775 recipes mention both. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
The recipe
Ingredients
Contains: milk (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Cook the steak
Preheat the broiler over a hot fire.
Broil the porterhouse steak quickly for a few minutes on each side.
Place the steak on a hot platter.
Spread both sides of the steak with melted butter, salt, and white pepper.
Assemble and serve
Top the steak with the fried plantains.
Pour the béchamel sauce over the steak and plantains.
Sprinkle grated horseradish over the entire dish.
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 aroma chemistry they share, and how many recipes mention both.
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Sauce + horseradishtop 6% of all pairsAroma overlapmoderateMentioned together775 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Butter + bananatop 7% of all pairsAroma overlapstrongMentioned together1,529 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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Butter + saucetop 8% of all pairsAroma overlaplowMentioned together15,317 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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White pepper + horseradishtop 10% of all pairsAroma overlaplowMentioned together232 recipes
Shared aroma: 2-methylbutyraldehyde (malty, chocolate).
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Butter + white peppertop 15% of all pairsAroma overlapmoderateMentioned together3,811 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Butter and sauce share little aroma chemistry, yet 15,317 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
What each ingredient does
- Porterhouse steak
- Provides the main meat, cooked quickly over high heat to brown the surface.
- Red bananas (plantains)
- Fried in butter, they add sweetness and a soft, caramelised texture to the dish.
- Béchamel sauce
- A white sauce of milk and flour that adds creaminess and moisture over the steak.
- Melted butter
- Adds fat and richness, helping the steak brown and carry flavour.
- Horseradish
- Adds sharp, pungent heat that cuts through the richness of the butter and sauce.
The step that matters
Broil the steak quickly over a hot fire. High, direct heat browns the surface fast while keeping the interior tender. Overcooking for longer drives out moisture and leaves the steak tough and dry.
Flavor stand-ins for the white pepper
How well each one fits the dish's main ingredients (butter, banana, sauce, horseradish):
- Capersbetter flavor fit
- Cinnamonbetter flavor fit
- Tarragonbetter flavor fit
- White pepperthe original
Fit is the average pairing score against butter, banana, sauce, horseradish. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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