In the cellar, she found ten strange-looking mushrooms (12)

'mushrooms' is the definition.
(chanterelle is a kind of mushroom)

'in the cellar she found ten strange-looking' is the wordplay.
I cannot quite understand how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found within the answer.
'she' could be 'elle' and 'elle' is found within the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?