Questions tagged [chemistry]

All about the chemistry of coffee, from the Maillard reaction to the extraction of dissolved solubles in coffee.

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4
votes
2answers
193 views

Quantifying flavor differences between varieties?

Different coffee varieties can produce very different flavour profiles. A different flavour profile points to differences in the chemical mix inside the cup. Are there any studies that quantify ...
11
votes
2answers
12k views

Is it good to have the “floating oil” on the surface of some coffee drinks?

Coffees prepared with some standard home machines (e.g., non-paper-filtered methods like moka, Turkish, or even some espresso machines) have something on the surface. It looks like oil from the beans. ...
4
votes
2answers
51 views

Could light transmittance be used to timely determine extraction?

I was wondering if I could get perfect extraction timing by measuring the light transmittance (of course with the same coarseness of grind) like a Beer's law sort of thing. Anyone have any readings? ...