Potassium found in bread loaf and pulse (6,3)
I believe the answer is:
monkey nut
'pulse' is the definition.
(monkey nuts are pulses)
'potassium found in bread loaf' is the wordplay.
'potassium' becomes 'K' (K is the chemical symbol for potassium).
'found in' is an insertion indicator.
'bread' becomes 'money' (slang term for money).
'loaf' becomes 'nut' (I've seen this in other clues).
'k' inserted into 'money' is 'monkey'.
'monkey'+'nut'='MONKEY-NUT'
'and' acts as a link.
(Other definitions for monkey nut that I've seen before include "seed" , "source of oil" , "It could be in the bag" , "Not my nuke (anag.)" , "goober" .)