How do you choose a line or a slogan?
The line, if you need one, says something that already happens at the bar and fits on one line under the name. A slogan is unnecessary if the name is already understood and the line is only decoration.
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Try saying it out loud while charging for a coffee. If it sounds foreign, it does not go on. The sign carries a magazine line in another language and nobody in the neighbourhood repeats it. Either no line, or one line in the house language, in the same type, under the name.