"An efficient bartenders first aim should be to please his customers, paying particular attention to meet the individual wishes of those whose tastes and desires he has already watched and ascertained; and, with those whose peculiarities he has had no opportunity of learning, he should politely inquire how they wish their beverages served, and use his best judgment in endeavoring to fulfill their desires to their entire satisfaction. In this way he will not fail to acquire popularity and success."
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Source : Jerry Thomas (2016). “Jerry Thomas' Bartenders Guide: How to Mix All Kinds of Plain and Fancy Drinks”, p.13, Courier Dover Publications
