Why it works: Arrowroot and vanilla match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 242 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Plain Chocolate
Ingredients
Directions
Prepare the chocolate
Heat the milk in a double boiler.
Scrape the chocolate finely and place it in a small frying pan with the sugar and water.
Set the frying pan over medium heat and stir constantly until smooth and glossy.
Make the chocolate milk
Stir the chocolate mixture into the boiling milk.
For a thicker chocolate, mix the arrowroot or corn-starch with 2 tablespoons of cold milk, stir into the boiling milk, and cook for 10 minutes before adding the dissolved chocolate.
Add vanilla if desired.
Beat with a whisk for three minutes and serve hot.
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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Arrowroot + vanillatop 3% of all pairsSmell alikestrongCooked together242 recipes
Shared aroma: coumarin (sweet, hay).
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Milk + vanillatop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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Chocolate + vanillatop 5% of all pairsSmell alikemoderateCooked together10,020 recipes
Shared aroma: sotolon (curry, maple).
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Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Chocolate + sugartop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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
- Chocolate
- Provides the main chocolate flavour and colour of the drink.
- Milk
- Forms the liquid base and gives the drink its creamy body.
- Sugar
- Adds sweetness to balance the bitterness of the chocolate.
- Arrowroot or corn-starch
- Thickens the milk when cooked, giving a heavier body to the drink.
The step that matters
Dissolving the chocolate smoothly. Chocolate must be melted slowly with sugar and water and stirred constantly, because overheating or skipping the stirring can make it grainy or scorched rather than smooth and glossy.
Swap the arrowroot
The recipe marks arrowroot as optional. How well each one fits the dish's main ingredients (chocolate, milk, sugar, vanilla):
- Arrowrootthe original
- Sweet potatofits about as well
- Capsicumfits less well
- Potatofits less well
Fit is the average pairing score against chocolate, milk, sugar, vanilla. Candidates are from the same food group and used in at least 100 recipes.
“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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