Onion Sauce

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.

1. Butter + creamtop 8% of all pairs
   Smell alikemoderate
   Cooked together41,516 recipes

   Shared aroma: delta-dodecalactone (sweet, creamy).

2. Butter + flourtop 12% of all pairs
   Smell alikelow
   Cooked together124,287 recipes

   Shared aroma: isobutyraldehyde (malty, green).

3. Onion + buttertop 15% of all pairs
   Smell alikemoderate
   Cooked together42,912 recipes

   Shared aroma: decanal (soap, orange peel).

4. Onion + flourtop 17% of all pairs
   Smell alikemoderate
   Cooked together32,460 recipes

   Shared aroma: isobutyraldehyde (malty, green).

5. Onion + creamtop 18% of all pairs
   Smell alikelow
   Cooked together10,827 recipes

   Shared aroma: 2-nonanone (fruity, floral).

Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they 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

Boiled onions

Form the bulk and flavor base of the sauce once pureed and sieved.

Fresh butter

Adds richness and fat, carrying flavor and giving the sauce a smooth mouthfeel.

Heavy cream

Adds body and richness, helping the sauce feel smooth and velvety.

All-purpose flour

Thickens the sauce as it stews, through starch gelatinization.

The step that matters

Swap the onion

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

1. Leekfits better
2. Arrowrootfits better
3. Chivefits better
4. Onionthe original

Fit is the average pairing score against butter, cream, flour. Candidates are from the same food group and used in at least 100 recipes.