Start to promote exotic diet only in a very obvious way (9)

'in a very obvious way' is the definition.
I can't judge whether this defines the answer.

'start to promote exotic diet only' is the wordplay.
'start to' says to take the initial letters.
'exotic' indicates an anagram (an unusual form of the letters).
The first letter of 'promote' is 'p'.
'diet'+'only'='dietonly'
'dietonly' with letters rearranged gives 'ointedly'.
'p'+'ointedly'='POINTEDLY'

Can you help me to learn more?