Tutor taking meal with singer and actress (7)

Here is my best explanation:

'tutor taking meal' is the definition.
'teacher' can be an answer for 'tutor' (I've seen this before). I am unsure of the 'taking meal' bit.

'singer and actress' is the wordplay.
'singer' becomes 'cher' (I've seen this in other clues).
'and' is a charade indicator (letters next to each other) (I've seen this in other clues).
'actress' becomes 'tea' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'cher' put after 'tea' is 'TEACHER'.

'with' acts as a link.

Can you help me to learn more?