Provide sustenance in food, stopped by man who ruined cutlery (7)
I believe the answer is:
nourish
'provide sustenance in food stopped by man who ruined cutlery' is the definition.
'nourish' can be an answer for 'provide sustenance' (I've seen this before). I'm unsure of the remainder of the definition.
'provide sustenance in food' is the wordplay.
'provide sustenance' becomes 'uri' (I can't justify this - if you can you should give a lot more credence to this answer).
'in' means one lot of letters goes inside another.
'food' becomes 'nosh' (nosh is a kind of food).
'uri' going into 'nosh' is 'NOURISH'.
Can you help me to learn more?
(Other definitions for nourish that I've seen before include "Feed - encourage to develop" , "Provide with materials for life and growth" , "Feed, sustain" , "Foster or cherish, often with food" , "Nurture, sustain" .)