Name: Ginger-Candy
Ingredients: 1 cup sugar; ½ cup water; 1 tablespoon grated ginger; ¼ teaspoon lemon juice

Why it works: Ginger and lemon match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 5,154 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Ginger-Candy

Ingredients

1 cup sugar
½ cup water
1 tablespoon grated ginger
¼ teaspoon lemon juice

Directions

The book gives no oven temperature. The 300°F in the steps was added when the recipe was transcribed, as a starting point.

Make the syrup

In a saucepan, combine sugar and water. Stir over medium heat until sugar dissolves.
Add grated ginger and lemon juice. Bring to a boil without stirring.
Continue boiling until the mixture reaches the hard crack stage (about 300°F or 150°C).

Set and cut

Pour onto a greased surface and let cool slightly.
Cut into pieces while still warm, then allow to cool completely.

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.

Ginger + lemontop 5% of all pairs

Smell alikestrong

Cooked together5,154 recipes

Shared aroma: beta-phellandrene (minty, terpene).
Sugar + gingertop 17% of all pairs

Smell alikelow

Cooked together14,054 recipes

Shared aroma: 1-penten-3-one (fish, pungent).
Sugar + lemontop 18% of all pairs

Smell alikelow

Cooked together53,532 recipes

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

Sugar and ginger barely smell alike, yet cooks put them together in 14,054 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

Sugar: Forms the candy base and sets into a hard, glassy texture as it cooks.
Water: Dissolves the sugar so it can cook evenly without crystallizing early.
Grated ginger: Adds the characteristic spicy, aromatic flavour to the candy.
Lemon juice: Adds a little acidity that helps keep the sugar from crystallizing.

The step that matters

Boiling to the hard crack stage without stirring. Stirring once the mixture boils can trigger sugar crystallization, making the candy grainy. Reaching about 300°F (150°C) is what gives the candy its hard, brittle set, so undercooking leaves it soft and sticky.