Name: Picnic Sandwiches
Ingredients: 1 fresh French roll; 1 cooked chicken (white meat only); 2 ounces cold tongue or ham; 1 large green pepper; 1 cucumber pickle; 4 olives; 1 tablespoon capers; mayonnaise dressing

Why it works: Cucumber and capers match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 303 recipes. Both carry coumarin, which smells sweet, hay. The science ↓

Picnic Sandwiches

Ingredients

Directions

Prepare

Cut the top off the French roll and scoop out the inside.
Chop the white meat of the chicken, tongue or ham, green pepper, cucumber pickle, and olives very fine.

Assemble and serve

Mix all the chopped ingredients with the capers and mayonnaise dressing.
Fill the roll with the mixture, replace the top crust, and serve immediately.

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.

Cucumber + caperstop 3% of all pairs

Smell alikestrong

Cooked together303 recipes

Shared aroma: coumarin (sweet, hay).
Olive + caperstop 3% of all pairs

Smell alikestrong

Cooked together1,688 recipes

Shared aroma: coumarin (sweet, hay).
Cucumber + olivetop 6% of all pairs

Smell alikestrong

Cooked together3,611 recipes

Shared aroma: 2-methylbutyl acetate (fruit).
Chicken + olivetop 9% of all pairs

Smell alikemoderate

Cooked together11,888 recipes

Shared aroma: acetic acid hexyl ester (sweet, green).
Pepper + olivetop 11% of all pairs

Smell alikemoderate

Cooked together30,263 recipes

Shared aroma: 2,4-decadienal (seaweed).

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

What each ingredient does

French roll: Forms the edible case that holds the filling.
Mayonnaise dressing: Binds the chopped ingredients together and adds moisture and richness.
Capers: Add a sharp, briny acidity that brightens the filling.

Swap the cucumber

How well each one fits the dish's main ingredients (chicken, meat, ham, pepper, olive, capers):

Mustardfits better
Shallotfits better
Tomatofits better
Cucumberthe original

Fit is the average pairing score against chicken, meat, ham, pepper, olive, capers. 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.