Skip to main content
Main

Sauce Robert

A savory sauce made with onions, butter, flour, beef or veal gravy, mustard, salt, and pepper.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
Jump to recipe ↓

Why it works: Onion and mustard match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Sauce Robert

Ingredients

Directions

Make the sauce

  1. In a skillet, brown the diced onions in the butter over medium heat.

  2. Once they are a deep yellow-brown, add the beef or veal gravy and let it simmer for 15 minutes.

  3. Skim the sauce, then season with salt and pepper.

Finish and serve

  1. Just before serving, stir in the prepared mustard.

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 their aromas overlap, and how often cooks already put them together.

  1. Onion + mustardtop 6% of all pairs
    Smell alikestrong
    Cooked together9,259 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  2. Onion + beeftop 7% of all pairs
    Smell alikemoderate
    Cooked together17,092 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  3. Pepper + mustardtop 9% of all pairs
    Smell alikemoderate
    Cooked together15,430 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  4. Beef + peppertop 10% of all pairs
    Smell alikemoderate
    Cooked together18,971 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  5. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Onions
Caramelized sugars and browning give the sauce its sweetness and deep colour.
Butter
Adds fat and richness, and helps the onions brown without sticking.
Flour
Thickens the sauce so it clings to the food it is served with.
Beef or veal gravy
Provides the main savoury liquid that the sauce is built on.
Prepared mustard
Adds a sharp bite that balances the sweet, rich onions and gravy.

The step that matters

Brown the onions to a deep yellow-brown. Slow browning develops sweetness and rich flavour through caramelisation and Maillard reactions. Pale onions taste flat and raw, while over-dark onions turn bitter.

Swap the mustard

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

  1. Potatofits better
  2. Chivefits better
  3. Leekfits better
  4. Mustardthe original

Fit is the average pairing score against onion, butter, flour, beef, 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

Roast BeefRoast Beef211 recipesBeef LoafBeef Loaf175 recipesCorned BeefCorned Beef87 recipesBeef BrothBeef Broth67 recipes