Believers heading off after ceremony to sample catering, maybe (7,8)

'catering maybe' is the definition.
(catering is a type of service industry)

'believers heading off after ceremony to sample' is the wordplay.
'believers' becomes 'Hindus' (believers in Hinduism).
'heading off' means to remove the first letter.
'after' says to put letters next to each other.
'ceremony' becomes 'service' (service is a kind of ceremony).
'to sample' becomes 'try' ('try' can be a synonym of 'sample').
'hindus' with its first letter taken away is 'indus'.
'indus' after 'service' is 'serviceindus'.
'serviceindus'+'try'='SERVICE INDUSTRY'