Name: Lemon Snaps
Ingredients: Flour (enough to roll soft); 1 teaspoon baking soda; 2 teaspoons lemon juice

Why it works: Flour and lemon are a kitchen classic. They rank in the top 17% of all ingredient pairs, and cooks put them together in 30,404 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Lemon Snaps

Oven, in the book's wordsA quick oven

Ingredients

Flour (enough to roll soft)
1 teaspoon baking soda
2 teaspoons lemon juice

Directions

The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.

Make and shape

Mix flour, baking soda, and lemon juice until a soft dough forms.
Roll out the dough on a floured surface.
Cut into desired shapes.

Bake

Bake in a 400°F (200°C) oven until lightly 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.

Flour + lemontop 17% of all pairs

Smell alikemoderate

Cooked together30,404 recipes

Shared aroma: isobutyraldehyde (malty, green).

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

What each ingredient does

Flour: Provides the structure that holds the dough together and sets as it bakes.
Baking soda: Reacts with the lemon juice to release gas, lightening the dough and aiding browning.
Lemon juice: Supplies acidity that reacts with the baking soda and adds a bright flavour.

“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.