A fascinating book starting with the physics of tasting to how the brain might decode and recognize flavor.

https://flavourjournal.biomedcentral.com/articles/10.1186/s13411-014-0030-9

Shepherd, G.M. Neuroenology: how the brain creates the taste of wine. Flavour 4, 19 (2015). https://doi.org/10.1186/s13411-014-0030-9

Buy it here, on Amazon:  https://www.amazon.com/Neuroenology-Brain-Creates-Taste-Wine/dp/0231177003