Name: Halibut in Tomato Sauce
Ingredients: 2 lbs halibut; 1 red pepper, chopped; 1 cup white sauce; ½ teaspoon onion, chopped; 1 cup strained tomatoes

Why it works: Pepper and tomato are a kitchen classic. They rank in the top 7% of all ingredient pairs, and 17,923 recipes mention both. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Halibut in Tomato Sauce

Ingredients

Directions

Prepare

Boil and shred the halibut.
Prepare the white sauce.

Make the sauce and serve

Add the strained tomatoes, onion, and chopped red pepper to the white sauce.
Pour the sauce over the fish and serve hot on toast.

Recipe from a historical cookbook (Internet Archive).

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.

Pepper + tomatotop 7% of all pairs

Aroma overlapmoderate

Mentioned together17,923 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Onion + tomatotop 8% of all pairs

Aroma overlapmoderate

Mentioned together20,633 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Pepper + oniontop 11% of all pairs

Aroma overlapmoderate

Mentioned together68,474 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Sauce + tomatotop 15% of all pairs

Aroma overlaplow

Mentioned together5,469 recipes

Shared aroma: ethanol (alcoholic, ethereal).
Sauce + oniontop 19% of all pairs

Aroma overlaplow

Mentioned together10,474 recipes

Shared aroma: ethanol (alcoholic, ethereal).

Sauce and onion share little aroma chemistry, yet 10,474 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

Halibut: Forms the main protein, flaking into tender shreds when boiled and shredded.
White sauce: Adds creamy body and moisture that coats the shredded fish.
Strained tomatoes: Provides smooth liquid and mild acidity to the sauce.
Red pepper: Adds sweetness and a fresh, vegetable flavor to the sauce.
Onion: Contributes savory aroma to the sauce.

Flavor stand-ins for the onion

How well each one fits the dish's main ingredients (pepper, sauce, tomato):

Capsicumbetter flavor fit
Eggplantbetter flavor fit
Okrabetter flavor fit
Onionthe original

Fit is the average pairing score against pepper, sauce, tomato. 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.