The mug I sent broken (5)

I believe the answer is:

stein

'the mug' is the definition.
(stein is a kind of mug)

'i sent broken' is the wordplay.
'broken' is an anagram indicator.
'i'+'sent'='isent'
'isent' is an anagram of 'STEIN'.

(Other definitions for stein that I've seen before include "Beer-mug" , "Earthenware beer jug" , "Inset (anag.)" , "Gertrude ---; US writer" , "Inset into earthenware mug for beer" .)

I've seen this clue in the Evening Standard.

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