Why it works: Shallot and tarragon match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and 492 recipes mention both. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓
The recipe
Ingredients
Contains: milk, fish (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Prepare the herrings
Preheat the oven to 300°F (150°C).
Place a big teaspoonful of French mustard and a bit of butter in the center of each herring.
Dust lightly with black pepper.
Place the herrings in a well-buttered bag.
Add ¼ cup of hock or sherry and ¼ cup of shallot or tarragon vinegar.
Bake and serve
Cook for 15 to 18 minutes, depending on the thickness of the fish.
Serve on a hot dish with beetroot salad.
Make the beetroot dressing
Mix 2 tablespoons of tarragon vinegar with 1 tablespoon of oil.
Season the dressing with salt and pepper.
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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Shallot + tarragontop 2% of all pairsAroma overlapstrongMentioned together492 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Mustard + tarragontop 3% of all pairsAroma overlapstrongMentioned together573 recipes
Shared aroma: methyleugenol (clove, spice).
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Mustard + shallottop 3% of all pairsAroma overlapstrongMentioned together842 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Beetroot + tarragontop 3% of all pairsAroma overlapstrongMentioned together112 recipes
Shared aroma: coumarin (sweet, hay).
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Pepper + tarragontop 3% of all pairsAroma overlapstrongMentioned together1,691 recipes
Shared aroma: estragole (anise, licorice).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Herrings
- Forms the main body of the dish, cooking gently to become moist and tender.
- French mustard
- Adds sharp, pungent flavour that cuts through the richness of the fish.
- Butter
- Adds richness and moisture, helping the fish stay soft as it cooks.
- Hock or sherry
- Adds acidity and wine flavour, and steams the fish inside the bag.
- Shallot or tarragon vinegar
- Adds acidity and aroma that balances the richness of the herring.
The step that matters
Cook for 15 to 18 minutes, depending on the thickness of the fish. Fish protein sets and toughens quickly once it reaches opaque firmness, so overcooking dries the flesh. Thicker fish need the longer end of the range, so check thickness before timing.
Flavor stand-ins for the beetroot
How well each one fits the dish's main ingredients (mustard, butter, pepper, sherry, shallot, tarragon, vinegar):
- Capsicumbetter flavor fit
- Chivebetter flavor fit
- Lettucebetter flavor fit
- Beetrootthe original
Fit is the average pairing score against mustard, butter, pepper, sherry, shallot, tarragon, vinegar. 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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