Crossword Genius

Bottled Pils design's what causes ruin (4,3,8)

Ross

I believe the answer is:

pigs and whistles

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'bottled' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'pils design's what causes ruin' is the wordplay.
'causes' is an anagram indicator.
'ruin' becomes 's' (I can't justify this - if you can you should give a lot more credence to this answer).
'pils'+'design'+'what'='pilsdesignwhat'
'pilsdesignwhat' with letters rearranged gives 'pigsandwhistle'.
'pigsandwhistle'+'s'='PIGS AND WHISTLES'

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I've seen this clue in The Telegraph.
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