Chocolate and mint
A cooling sensation rather than a flavour contrast, and one of the most polarising additions in confectionery.
Mint works on chocolate through menthol, which triggers cold receptors rather than contributing much taste. That physical cooling against chocolate's warm melt is the whole effect, and it is why mint chocolate divides people so sharply — you either enjoy the sensation or you do not.
Peppermint is sharper and more medicinal; spearmint is softer and sweeter. Peppermint dominates in confectionery, which is part of why the pairing has the reputation it does.
The principle
Menthol is a sensation, not a flavour. Use less than seems right and pair with dark chocolate, which has enough character to survive it.
Pairings
Dark chocolate has enough bitterness and body to remain audible under menthol's cooling effect.
For example: peppermint with a 70% dark; after-dinner mint thins
Commonly recommended, and frequently disappointing
Mint with white chocolate. White has no bitterness or body to stand against the menthol, so the result reads as toothpaste.
Serving
Oil-based mint flavouring rather than an extract in a water or alcohol base, which will seize the chocolate.
Related
Chocolate types this pairs with
- Dark chocolateDark chocolate has enough bitterness and body to remain audible under menthol's cooling effect.
Sources
- ChocolateHQ editorial synthesis — ChocolateHQ(citation identity confirmed; passage not re-read)