Recall I'm sincere when pressured? (9)

I believe the answer is:

reminisce

I'm a little stuck... Click here to teach me more about this clue!

'recall' is the definition.
(I've seen this before)

'i'm sincere when pressured?' is the wordplay.
'i'm sincere' can be anagrammed to 'REMINISCE'.
But, I am unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for reminisce that I've seen before include "Cast mind back over old times" , "Give account of past" , "Have fond recollections" , "Look back at events" , "Recall past events" .)

I've seen this clue in The Independent.

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