From coffee to prescription drugs, Americans love making a purchase from the comfort of their vehicle – but when it comes to speed of service, not all drive-thrus are equal.

The so-called Golden Ratio refers to the ideal proportions of water and ground coffee at the beginning of the brewing process, resulting in a full-flavored, balanced cup.

Coffee can have different effects if you drink it in the morning, during the afternoon, or in the evening. Other factors, ...