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Kidney Toasts

Kidney toasts are toasted bread squares topped with a seasoned kidney mixture and baked.

From an old cookbook · modernised transcription
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Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Kidney Toasts

Ingredients

Directions

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare the filling

  1. Wash and pound the kidney with the surrounding fat.

  2. Season with pepper, salt, lemon peel, and nutmeg. Mix in the beaten egg yolk.

Assemble and bake

  1. Spread the mixture on thin slices of toasted bread cut into squares.

  2. Grease a dish with butter and place the kidney toasts in it.

  3. Brown the toasts in a 400°F (200°C) oven and serve hot.

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. Pepper + lemontop 3% of all pairs
    Smell alikestrong
    Cooked together27,047 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  2. Lemon + nutmegtop 5% of all pairs
    Smell alikestrong
    Cooked together11,318 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

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

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

  4. Pepper + nutmegtop 7% of all pairs
    Smell alikestrong
    Cooked together13,015 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  5. Egg + breadtop 13% of all pairs
    Smell alikemoderate
    Cooked together22,662 recipes

    Shared aroma: (e)-2-octenal (fatty, green).

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

What each ingredient does

Kidney
Forms the main savoury filling, giving the toasts their body and rich flavour.
Egg yolk
Binds the pounded kidney mixture so it spreads evenly and holds its shape.
Bread
Provides a crisp base that holds the filling while it bakes.
Lemon peel
Adds bright aromatic oils that cut through the richness of the kidney.

The step that matters

Brown the toasts in the oven. Baking at high heat browns the surface and crisps the bread while the filling sets. Too low a heat or too long a bake can dry the filling and make the toast soggy or tough.

“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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