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Lax Croutons

A chilled appetizer of smoked salmon spread on cucumber slices atop croutons, garnished with herbs.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 9 ingredients
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Why it works: Cucumber and tarragon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 274 recipes. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓

Lax Croutons

Ingredients

Directions

Prepare the topping

  1. Pound the lox in a mortar with the butter and cayenne pepper.

  2. Cut the cucumber into thin slices and season with olive oil, vinegar, salt, and pepper.

Assemble and serve

  1. Place a cucumber slice on each crouton, ensuring they are the same size.

  2. Spread a layer of the lox mixture on top of the cucumber slice.

  3. Sprinkle finely chopped tarragon or parsley over the top.

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. Cucumber + tarragontop 3% of all pairs
    Smell alikestrong
    Cooked together274 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  2. Pepper + tarragontop 5% of all pairs
    Smell alikestrong
    Cooked together2,399 recipes

    Shared aroma: estragole (anise, licorice).

  3. Cucumber + olivetop 6% of all pairs
    Smell alikestrong
    Cooked together3,611 recipes

    Shared aroma: 2-methylbutyl acetate (fruit).

  4. Vinegar + tarragontop 7% of all pairs
    Smell alikemoderate
    Cooked together2,547 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Cucumber + vinegartop 8% of all pairs
    Smell alikemoderate
    Cooked together4,734 recipes

    Shared aroma: 2-methylbutyl acetate (fruit).

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

What each ingredient does

Lax (or smoked fish)
Provides the smoky, salty flavour that is the main point of the dish.
Butter
Binds the pounded fish into a spreadable mixture and adds richness.
Cucumber
Adds cool, crisp texture and a fresh base layer under the topping.
Olive oil
Carries flavour and adds fat to dress the cucumber slices.
Vinegar
Adds acidity that brightens the cucumber and cuts the richness of the fish and butter.

The step that matters

Pound the lox with the butter until smooth. Pounding breaks the fish into fine fibres and blends it evenly with the butter, so the spread is smooth and holds together on the crouton instead of crumbling or tasting patchy.

Swap the cucumber

How well each one fits the dish's main ingredients (smoked fish, butter, pepper, olive, vinegar, tarragon):

  1. Capsicumfits better
  2. Tomatofits better
  3. Mustardfits about as well
  4. Cucumberthe original

Fit is the average pairing score against smoked fish, butter, pepper, olive, vinegar, tarragon. 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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