Encourage remit about kitchen item (3,5)
I believe the answer is:
egg timer
'kitchen item' is the definition.
(I've seen this before)
'encourage remit about' is the wordplay.
'encourage' becomes 'egg'.
'about' is a reversal indicator.
'remit' in reverse letter order is 'timer'.
'egg'+'timer'='EGG-TIMER'
(Other definitions for egg timer that I've seen before include "Mechanism on for, say, three and half minutes?" , "Sandglass that runs for three (or four?) minutes" , "Possible kitchenware" , "Four-minute hourglass" , "device for boiler" .)