Can anyone help me with 13a? I have ?a?h?i. It's my last one and I'm thoroughly stuck. I've been working on the basis that the definition is the first two words but can't find anything. Am I looking at it wrong?
21 - a kind of drink followed by last two letters which are the customary crossword answer to "setter's" (when it's not I'm). Guinness gives you the thematic substitution which is the definition (I believe - not a cards man myself ...)