Name: Orange Tea Biscuit
Ingredients: 2 tablespoons fat; 1 cup flour; 1 tablespoon orange juice; 1 tablespoon lemon juice; Grated rind of 3 oranges; Small cubes of sugar

Why it works: Orange and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Orange Tea Biscuit

Ingredients

Directions

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.

Prepare the dough

Preheat the oven to 400°F (200°C).
In a bowl, mix the fat and flour to make a dough.
Place the dough in a baking pan.

Bake and finish

Press a small cube of sugar dipped in the orange juice, lemon juice, and grated orange rind mixture into the center of each biscuit.
Bake for 15-20 minutes until golden.

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.

Orange + lemontop 1% of all pairs

Smell alikestrong

Cooked together10,634 recipes

Shared aroma: 3-hexenal (apple, fruity).
Flour + sugartop 15% of all pairs

Smell alikemoderate

Cooked together92,116 recipes

Shared aroma: phenylacetaldehyde (hawthorne, honey).
Flour + lemontop 17% of all pairs

Smell alikemoderate

Cooked together30,404 recipes

Shared aroma: isobutyraldehyde (malty, green).
Lemon + sugartop 18% of all pairs

Smell alikelow

Cooked together53,532 recipes

Shared aroma: 2-nonenal (fatty, green).
Orange + sugartop 20% of all pairs

Smell alikelow

Cooked together19,212 recipes

Shared aroma: beta-damascenone (apple, rose).

Lemon and sugar barely smell alike, yet cooks put them together in 53,532 recipes: they work on texture and structure more than aroma.

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

What each ingredient does

Flour: Forms the structure of the dough once combined with the fat.
Fat: Shortens the dough, giving the biscuit a tender, crumbly texture.
Sugar: Adds sweetness and helps the surface brown in the oven.
Orange rind: Adds aromatic citrus oil that gives the biscuit its orange flavour.