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Gravy, Brown, Cheap and Good

A simple brown gravy made with toasted bread, onions, dripping or butter, stock, meat trimmings, herbs, salt, pepper, and mushroom ketchup.

From an old cookbook · modernised transcription
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Why it works: Bread and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓

Gravy, Brown, Cheap and Good

Ingredients

Directions

Prepare the base

  1. Toast the bread on both sides until hard and darkly browned, but not burnt.

  2. Slice the onions thinly and fry them in dripping or butter until brightly browned.

  3. Pour the boiling water or stock over the onions.

Simmer and finish

  1. Add the toast, meat trimmings, and savory herbs.

  2. Simmer gently for about three hours until the gravy thickens.

  3. Strain the gravy, then add salt, pepper, and mushroom ketchup.

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. Bread + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together27,232 recipes

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

  2. Butter + mushroomtop 7% of all pairs
    Smell alikemoderate
    Cooked together12,525 recipes

    Shared aroma: trans-2-decenal (waxy, orange).

  3. Bread + mushroomtop 10% of all pairs
    Smell alikemoderate
    Cooked together2,536 recipes

    Shared aroma: 2-nonenal (fatty, green).

  4. Onion + mushroomtop 10% of all pairs
    Smell alikemoderate
    Cooked together10,626 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  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

Bread
Toasted bread adds dark color and a roasted, toasty flavor to the gravy.
Onions
Browned onions build sweetness and deep savory flavor as the sugars caramelize.
Dripping or butter
Fat carries the onion browning and adds richness to the finished gravy.
Meat trimmings or bones
Simmered meat and bones release gelatin and savory flavor, giving body to the gravy.
Mushroom ketchup
Adds concentrated savory, umami depth at the end of cooking.

The step that matters

Frying the onions until brightly browned. Browning the onions develops caramelized sugars and Maillard flavors that give the gravy its color and depth. Stopping too early leaves a pale, flat taste, while going too far makes it bitter.

Swap the onion

How well each one fits the dish's main ingredients (bread, butter, meat, pepper, mushroom, ketchup):

  1. Capsicumfits better
  2. Shallotfits better
  3. Tomatofits about as well
  4. Onionthe original

Fit is the average pairing score against bread, butter, meat, pepper, mushroom, ketchup. 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.

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