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 and wipe them with a damp cloth to remove scales.
Do not wash the herrings.
Cut off the heads, tails, and fins, split down the middle, and remove the center bones.
Lay the fish flat, season with pepper and salt, and roll them up with the skin side out.
Layer and bake
Place them neatly in a pie dish, adding a bay leaf and a small piece of onion between each herring.
Mix the vinegar and water, then pour over the fish.
Cover the dish with greased paper and bake in a moderate oven (350°F / 175°C) for 2 to 3 hours.
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
- Form the main body of the dish, becoming tender and flaky as they cook.
- Vinegar
- Provides acidity that flavors the fish and helps preserve and firm it during pickling.
- Onion
- Adds aromatic sweetness and flavor that infuses the fish as it bakes.
- Sweet bay leaves
- Contribute a subtle aromatic flavor to the fish during baking.
The step that matters
Bake covered at a moderate oven. Covering the dish with greased paper traps steam so the fish cooks gently and stays moist. Baking for the full 2 to 3 hours at a moderate heat lets the bones soften and the vinegar mixture penetrate the fish.
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