Name: Mexican Sandwiches
Ingredients: ¾ cup grated cheese; 3 Spanish peppers; pinch of salt; dash of cayenne pepper; 10 tablespoons mayonnaise dressing; stale bread

Why it works: Cheese and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 2,130 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓

Mexican Sandwiches

Ingredients

Directions

Prepare

Chop the Spanish peppers.
Slice the stale bread very thin, then trim off the crust.
Cut the bread with a biscuit cutter.

Assemble

Mix the cheese, chopped peppers, salt, cayenne pepper, and mayonnaise dressing together.
Spread the cheese mixture between layers of bread.

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.

Cheese + breadtop 7% of all pairs

Smell alikemoderate

Cooked together2,130 recipes

Shared aroma: delta-decalactone (sweet, creamy).
Pepper + breadtop 16% of all pairs

Smell alikemoderate

Cooked together20,964 recipes

Shared aroma: 2-nonenal (fatty, green).
Cheese + peppertop 18% of all pairs

Smell alikemoderate

Cooked together7,861 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

Grated cheese: Melts into the filling and adds richness and savory flavor to the sandwich.
Mayonnaise dressing: Adds moisture and fat, binding the filling so it spreads smoothly.
Stale bread: Dry, firm slices hold the filling without turning soggy.
Spanish peppers: Provide the main vegetable flavor and a bit of bite to the filling.

“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.