Cashew trees supply something to get your teeth into (6,5)
I believe the answer is:
cheese straw
'something to get your teeth into' is the definition.
(type of snack)
'cashew trees supply' is the wordplay.
'supply' is an anagram indicator (in a supple way).
'cashew'+'trees'='cashewtrees'
'cashewtrees' anagrammed gives 'CHEESE STRAW'.
(Other definitions for cheese straw that I've seen before include "savoury snack" , "pastry" , "Party snack" .)