Please use a descriptive subject line such as “Correction: Water chemistry article” or “Privacy request”.
Response scope
We can clarify how a calculator works and review factual correction requests. We cannot provide personalized medical advice through the caffeine estimator or guarantee that a specific coffee recipe will suit every grinder and roast.
Before launch: the site owner should create and monitor this mailbox on the production domain.
For an actionable correction request
Include the page URL, the specific passage or calculator inputs, what you believe is incorrect and, if available, a reference. Please do not include private medical information. This website does not operate a support form, so messages must be sent using your own email application.