Name: Crisp Biscuits
Ingredients: 1½ pounds all-purpose flour; 2 small egg yolks; milk, as needed

Why it works: Flour and milk are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Crisp Biscuits

Oven, in the book's wordsA slow oven

Ingredients

1½ pounds all-purpose flour
2 small egg yolks
milk, as needed

Directions

The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.

Make the dough

In a large bowl, combine the flour and egg yolks.
Add enough milk to form a stiff dough.
Knead the dough until smooth.

Shape and bake

Roll out the dough thinly and cut into small biscuits using a tin cutter.
Bake in a 300°F (150°C) oven for about 15 minutes.

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.

Flour + milktop 14% of all pairs

Smell alikelow

Cooked together78,219 recipes

Shared aroma: isobutyraldehyde (malty, green).
Flour + eggtop 15% of all pairs

Smell alikelow

Cooked together106,462 recipes

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

Smell alikemoderate

Cooked together88,785 recipes

Shared aroma: 2-nonenal (fatty, green).

Flour and milk barely smell alike, yet cooks put them together in 78,219 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

All-purpose flour: Provides the main structure, forming gluten as the dough is kneaded.
Egg yolks: Add richness and fat, helping the biscuits bind and brown.
Milk: Hydrates the flour so the mixture forms a dough.

“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.