Endless foam on pints of stout in Ring (8)
I believe the answer is:
surround
'ring' is the definition.
(I know that ring can be written as surround)
'endless foam on pints of stout' is the wordplay.
'endless' means to remove the last letter.
'foam' becomes 'surf' (I've seen this before).
'on' says to put letters next to each other.
'pints of stout' becomes 'round' (I am not sure about this - if you are sure you should believe this answer much more).
'surf' with its last letter taken away is 'sur'.
'sur'+'round'='SURROUND'
'in' is the link.
Can you help me to learn more?
(Other definitions for surround that I've seen before include "Encircle, fence in" , "Ring" , "Encompass" .)