Name: Lemon Squash
Ingredients: 2 lemons; 1 large bottle soda water; 2 lumps of sugar (optional)

Why it works: Lemon and sugar are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Lemon Squash

Ingredients

2 lemons
1 large bottle soda water
2 lumps of sugar (optional)

Directions

Prepare

Peel one lemon and save the peel for other uses.
Squeeze the juice from both lemons through a strainer.
Divide the lemon juice between two glasses.

Assemble and serve

Add lemon slices to each glass.
If using sugar, crush it and add to the glasses.
Open the soda water and pour it into the glasses.

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.

Photo for illustrative purposes only · Contact us to use it

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.

Lemon + sugartop 18% of all pairs

Smell alikelow

Cooked together53,532 recipes

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

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

Lemons: Provide the juice and aroma that give the squash its sharp, fresh flavour.
Soda water: Adds carbonation, giving the drink its fizz and lightness.
Sugar: Adds sweetness to balance the sharpness of the lemon juice.

“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.