Why it works: Coffee and syrup work together. They rank in the top 15% of all ingredient pairs, and cooks put them together in 318 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Coffee Syrup
Ingredients
Directions
The book gives no oven temperature. The 220°F in the steps was added when the recipe was transcribed, as a starting point.
Make the syrup
Make a strong decoction of mocha coffee, very clear, to the amount of 1 pint.
In a pot, boil 2 pints of syrup until it reaches a half (about 220°F or 104°C).
Add the coffee to the syrup and bring it back to a boil until it reaches a pearl stage (about 230°F or 110°C).
Finish
Strain the mixture through a cloth.
Bottle the syrup when it is cold.
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.
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Coffee + syruptop 15% of all pairsSmell alikelowCooked together318 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
- Strong mocha coffee
- Provides the coffee flavor and aroma, and adds liquid that thins the syrup.
- Syrup
- Provides sweetness and body, and its concentration sets the final thickness as it boils down.
The step that matters
Bringing the coffee syrup to a boil until it reaches the pearl stage. Boiling drives off water and concentrates the sugar, which determines the syrup's thickness. Stopping too early leaves it thin and watery, while boiling too long makes it overly thick and prone to crystallizing once cold.
“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.
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