Loudly express anger about some essentially French dairy product (7)

'french dairy product' is the definition.
The definition suggests a singular noun which matches the answer.

'loudly express anger about some essentially' is the wordplay.
'loudly' becomes 'f' (short for forte - 'loud' in music).
'express anger' becomes 'rage' (to rage is to be angry).
'about' means one lot of letters goes inside another.
'essentially' says to take the centre.
The middle of 'some' is 'om'.
'rage' placed around 'om' is 'romage'.
'f'+'romage'='FROMAGE'

Can you help me to learn more?