Samarian sunset

The Samarian sunset was a beverage which initially appeared clear, but when the rim of the glass was tapped sharply, a swirl of orange and gold luminescence appeared in the liquid and streamed out to fill the glass, until the entire drink turned a dull non-luminescent gold.

In 2368, Data made Deanna Troi a Samarian sunset in the traditional style, as per their bet after he lost a game of three-dimensional chess to her. 

Samarian sunsets were a favored drink of Cardassian professor Natima Lang, who stopped drinking them after she and Quark had a falling-out, since they reminded her of him. Despite that, when they met again on Deep Space 9, Quark made her one. 

Samarianischer Sunset