Healthy food, extremely dry? Takes photographs of these biscuits (6,5)

'these biscuits' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'healthy food extremely dry? takes photographs' is the wordplay.
'healthy food' becomes 'bran' (bran is a healthy food).
'extremely' means to remove the middle letters (only the extremes of the word are used).
'takes' is a charade indicator (letters next to each other).
'photographs' becomes 'snaps' ('snap' can be a synonym of 'photograph').
'dry' with its centre taken out is 'dy'.
'bran'+'dy'+'snaps'='BRANDY SNAPS'

'of' is the link.

Can you help me to learn more?