Name: Melons in Syrup
Ingredients: unripe melons; coarse sea salt; alum; syrup (20° Beaume); sulphite of soda; water

Why it works: Melon and syrup work together. They rank in the top 20% of all ingredient pairs, and cooks put them together in 106 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓

Melons in Syrup

Ingredients

Directions

Prepare the melon

Select unripe melons with prominent ribs and peel them to a thickness of 1/32 inch.
Slice the melons along the ribs, removing all seeds.
Soak the slices in a saltwater solution (10-12% salt) for one week.
Blanch the soaked melon slices in alum water, bringing it slowly to a boil.
Cool the slices with cold water.

Make the syrup and pack

Place the slices in stone jars, ensuring they are in contact with the syrup.
Pour warm syrup (not boiling) over the fruit, repeating this twice on the first day.
Add 1 ounce of sulphite of soda for every 4 gallons of syrup to the first batch.
Drain the syrup every two days, raising the syrup's temperature by one degree each time until it reaches 26° Beaume.
Pour the syrup warm (never boiling) and seal in jars.

Process

Process quart cans for 12 minutes, pint cans for 8 minutes, quart jars for 10 minutes, and pint jars for 6 minutes in boiling 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.

Melon + syruptop 20% of all pairs

Smell alikelow

Cooked together106 recipes

Shared aroma: ethanol (alcoholic, ethereal).

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

What each ingredient does

Unripe melons: Provides the firm flesh that holds its shape through soaking and syrup.
Syrup (20° beaume): Sugar concentration that sweetens the melon and preserves it over time.
Alum: Firms the melon tissue so the slices stay crisp during blanching and preserving.
Coarse sea salt: Salt soak draws water out of the melon, firming the slices before syrup.
Sulphite of soda: Helps keep the melon slices pale and preserves their colour in the syrup.

The step that matters

Draining and raising the syrup gradually to 26° Beaume. Syrup that is too strong too early can draw moisture out of the fruit too fast and toughen it, while syrup added boiling can soften the slices. Warm syrup and small, gradual concentration increases let sugar penetrate the tissue evenly without collapsing it.

“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.