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Hot-pot

A baked casserole of sliced potatoes, onions, tomatoes, herbs, butter, salt, and pepper.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Potato and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Hot-pot

Oven, in the book's wordsA hot oven

Ingredients

Directions

The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

  1. Peel, wash, and slice the potatoes thinly.

  2. Peel and slice the onions thinly.

Assemble

  1. Layer the vegetables and tomatoes in a baking dish, dusting with pepper and salt between layers, finishing with a layer of potatoes.

  2. Cut the butter into small pieces and place them on top of the potatoes.

  3. Fill the dish with hot water and bake for 2 hours at 400°F (200°C).

  4. Add more hot water if necessary during baking to maintain moisture.

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. Potato + oniontop 3% of all pairs
    Smell alikemoderate
    Cooked together9,023 recipes

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

  2. Potato + tomatotop 5% of all pairs
    Smell alikestrong
    Cooked together2,798 recipes

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

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

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

  4. Onion + tomatotop 8% of all pairs
    Smell alikemoderate
    Cooked together20,633 recipes

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

  5. Potato + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together8,305 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

Potatoes
Form the bulk of the casserole and become tender and soft as they bake.
Onions
Add sweetness and aroma that deepen as they cook slowly under the dish's cover of water.
Tomatoes
Add acidity and moisture that blend into the layers during baking.
Butter
Adds richness and fat that enrich the potatoes and help the top brown.

The step that matters

Keeping the dish moist during baking. Thin potato slices can dry out or scorch in a hot oven if the liquid runs low. Starch in the potatoes needs steady moisture to soften fully, so topping up the hot water as the record directs helps the layers cook evenly.

Swap the tomato

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

  1. Chivefits better
  2. Capsicumfits better
  3. Carrotfits about as well
  4. Tomatothe original

Fit is the average pairing score against potato, onion, 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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