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Tomatoes Au Gratin

A baked tomato gratin with bread crumbs, butter, pepper, and salt.

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 ↓

Tomatoes Au Gratin

Oven, in the book's wordsA moderate oven

Ingredients

Directions

The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

  1. Preheat the oven to 350°F (175°C).

  2. Butter a fire-proof dish.

Assemble

  1. Slice the tomatoes and lay them in the dish.

  2. Sprinkle with pepper and salt.

  3. Add small pieces of butter on top.

  4. Mix bread crumbs with butter and layer on top of the tomatoes.

Bake and serve

  1. Bake for about 20 minutes until the tomatoes are tender.

  2. Serve in the dish they were cooked in.

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. Tomato + peppertop 7% of all pairs
    Smell alikemoderate
    Cooked together17,923 recipes

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

  3. Tomato + breadtop 10% of all pairs
    Smell alikemoderate
    Cooked together1,013 recipes

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

  4. Bread + peppertop 16% of all pairs
    Smell alikemoderate
    Cooked together20,964 recipes

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

  5. Butter + peppertop 21% of all pairs
    Smell alikemoderate
    Cooked together85,593 recipes

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

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

What each ingredient does

Tomatoes
Provide the main body of the gratin and release moisture that softens as they bake.
Bread crumbs
Form a crisp, golden topping that contrasts with the soft tomatoes below.
Butter
Adds richness and helps the bread crumbs brown evenly in the oven.

Swap the tomato

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

  1. Capsicumfits better
  2. Tomatothe original
  3. Potatofits about as well
  4. Asparagusfits about as well

Fit is the average pairing score against bread, butter, 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.

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