Name: Giblet Soup
Ingredients: 2 sets of giblets; 1 onion; highly-seasoned brown gravy stock; chopped parsley; flour; butter

Why it works: Onion and parsley are a kitchen classic. They rank in the top 9% of all ingredient pairs, and 25,843 recipes mention both. Both carry 2,4-decadienal, which smells seaweed. The science ↓

Giblet Soup

Ingredients

Directions

Clean and parboil the giblets.
Remove skins from the birds' feet, cut gizzards into quarters, and necks into 3 pieces.
Add wings, heads, and livers cut in half, removing beaks, and boil in weak stock with an onion.
Add boiled giblets and their broth to the brown gravy stock, along with chopped parsley.
Remove the onion and thicken the soup with flour kneaded with butter.

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.

Onion + parsleytop 9% of all pairs

Aroma overlapmoderate

Mentioned together25,843 recipes

Shared aroma: 2,4-decadienal (seaweed).
Flour + buttertop 12% of all pairs

Aroma overlaplow

Mentioned together124,287 recipes

Shared aroma: isobutyraldehyde (malty, green).
Parsley + flourtop 12% of all pairs

Aroma overlapmoderate

Mentioned together16,675 recipes

Shared aroma: isobutyraldehyde (malty, green).
Onion + buttertop 15% of all pairs

Aroma overlapmoderate

Mentioned together42,912 recipes

Shared aroma: decanal (soap, orange peel).
Parsley + buttertop 15% of all pairs

Aroma overlapmoderate

Mentioned together28,563 recipes

Shared aroma: trans-2-hexenal (green, leafy).

Flour and butter share little aroma chemistry, yet 124,287 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

Flavor stand-ins for the onion

How well each one fits the dish's main ingredients (parsley, flour, butter):

Shallotbetter flavor fit
Chivebetter flavor fit
Leekbetter flavor fit
Onionthe original

Fit is the average pairing score against parsley, flour, butter. 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).