Name: Potato and Tomato Pie
Ingredients: 6 tomatoes; 2 cups potatoes; ½ lb short pastry; 1 teaspoon dripping; 2 teaspoons parsley; 1½ teaspoons sweet herbs; ¼ teaspoon salt; ¼ teaspoon pepper

Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

Potato and Tomato Pie

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare and layer

Peel and slice the potatoes and tomatoes.
Layer them alternately in a pie dish.
Sprinkle parsley, herbs, salt, and pepper over the layers.

Cover and bake

Cover with short pastry.
Bake at 350°F (175°C) for one hour.
Serve hot.

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.

Parsley + peppertop 2% of all pairs

Smell alikestrong

Cooked together34,122 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Potato + parsleytop 5% of all pairs

Smell alikemoderate

Cooked together2,855 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Tomato + potatotop 5% of all pairs

Smell alikestrong

Cooked together2,798 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Tomato + peppertop 7% of all pairs

Smell alikemoderate

Cooked together17,923 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Tomato + parsleytop 8% of all pairs

Smell alikemoderate

Cooked together5,398 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).

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

What each ingredient does

Potatoes: Provide the bulk and starchy body that holds the layered pie together.
Tomatoes: Add moisture and a gentle acidity that flavours the filling as it cooks.
Short pastry: Forms a rich, tender crust that encloses the filling and browns in the oven.
Dripping: Adds fat for savoury richness and helps the pastry brown.