Name: Convenient Lemonade
Ingredients: 4 ounces powdered tartaric acid; 2 teaspoons essential oil of lemon; sugar; water

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 ↓

Convenient Lemonade

Ingredients

4 ounces powdered tartaric acid
2 teaspoons essential oil of lemon
sugar
water

Directions

Mix the powdered tartaric acid and essential oil of lemon together.
Store the mixture in a well-corked bottle.
Mix 1 tablespoon of the mixture with sugar and water.

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.

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

Powdered tartaric acid: Provides the sour, acidic bite that makes the drink taste like lemonade.
Essential oil of lemon: Supplies the concentrated lemon aroma and flavor.
Sugar: Balances the sourness of the acid with sweetness.

“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.