Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
To Bake or Pickle Herrings
Ingredients
Directions
The book says “a moderately hot oven”. The 350°F in the steps is the modern equivalent, not the book's own figure.
Prepare the herring
Clean the herrings. Wipe them with a damp cloth to remove scales. Do not wash them.
Cut off the heads, tails, and fins. Split the herrings down the middle. Remove the center bones.
Lay the fish flat. Season the fish with pepper and salt. Roll the fish up with the skin side out.
Assemble and bake
Place the fish neatly in a pie dish. Add a bay leaf between each herring. Add a small piece of onion between each herring.
Mix the vinegar and water. Pour the mixture over the fish. Cover the dish with greased paper. Bake in a moderate oven (350°F / 175°C) for 2 to 3 hours.
Serve
Serve hot or cold.
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.
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Vinegar + peppertop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Herrings
- The main fish, which is cooked whole-rolled until tender and flaky.
- Vinegar
- Adds acidity that gives the pickled, tangy flavour and helps firm the fish.
- Onion
- Adds sharp aromatic flavour that mellows during the long slow bake.
- Sweet bay leaves
- Contribute a subtle aromatic flavour to the fish and the pickling liquid.
The step that matters
Covering the dish during the long bake. The greased paper traps moisture and gentle heat so the fish cooks slowly and stays tender instead of drying out over 2 to 3 hours in the oven.
Swap the onion
How well each one fits the dish's main ingredients (vinegar, pepper):
- Capsicumfits better
- Mustardfits better
- Cabbagefits better
- Onionthe original
Fit is the average pairing score against vinegar, pepper. Candidates are from the same food group and used in at least 100 recipes.
“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.
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.
Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipes
Yorkshire Pudding264 recipes