Sail on such beer! (8)
I believe the answer is:
schooner
'sail' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
'on such beer' is the wordplay.
I cannot quite see how this works, but
'on' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for schooner that I've seen before include "wooden vessel" , "No chores on this sailing ship" , "Two-master; a glass" , "that carries sherry" , "Old sailing vessel and large glass" .)