Cashmere blend? No idea! (6,2)
I believe the answer is:
search me
'no idea' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'cashmere blend?' is the wordplay.
'blend?' indicates anagramming the letters (I've seen 'blended' mean this).
'cashmere' with letters rearranged gives 'SEARCH ME'.
Can you help me to learn more?
(Other definitions for search me that I've seen before include "Church reciting book" , "I haven't a clue" , "how you'll find what's concealed on my person" , "I certainly don't know" , "I've no idea" .)