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Colcannon

A dish of mashed potatoes mixed with greens, butter, and salt.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Potato and spinach work together. They rank in the top 5% of all ingredient pairs, and cooks put them together in 646 recipes. Both carry 2-isobutyl-3-methoxypyrazine, which smells green bell pepper, earthy. The science ↓

Colcannon

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. Boil the potatoes and greens separately.

  2. Mash the potatoes.

  3. Squeeze the greens dry and chop them finely.

Mix and bake

  1. Mix the mashed potatoes with the chopped greens, butter, and salt.

  2. Transfer the mixture into a buttered mold.

  3. Bake in a hot oven at 400°F (200°C) for ten minutes.

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 + spinachtop 5% of all pairs
    Smell alikemoderate
    Cooked together646 recipes

    Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).

  2. Potato + buttertop 13% of all pairs
    Smell alikemoderate
    Cooked together6,456 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  3. Spinach + buttertop 24% of all pairs
    Smell alikemoderate
    Cooked together2,583 recipes

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

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

What each ingredient does

Potatoes
Mashed to form the soft, fluffy body of the dish.
Spinach (or other greens)
Adds color, flavor, and moisture-controlled texture once squeezed dry and chopped.
Butter
Adds richness and fat, carrying flavor and softening the mash.

The step that matters

Squeeze the greens dry and chop them finely. Excess water from the greens thins the mashed potatoes and makes the mixture loose and soggy when baked. Squeezing removes that water, and fine chopping spreads the greens evenly through the mash.

Swap the spinach

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

  1. Chivefits better
  2. Onionfits better
  3. Asparagusfits better
  4. Spinachthe original

Fit is the average pairing score against potato, butter. 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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