Bertha cuts fresh bread (10)
I believe the answer is:
bruschetta
'bread' is the definition.
(bread-based dish)
'bertha cuts fresh' is the wordplay.
'fresh' is an anagram indicator.
'bertha'+'cuts'='berthacuts'
'berthacuts' with letters rearranged gives 'BRUSCHETTA'.
(Other definitions for bruschetta that I've seen before include "Italian toast" , "Ciabatta with olive oil and tomatoes" , "Italian dish" , "Italian bread, toasted and served with olive oil, tomatoes, herbs, garlic etc" .)