Kitchen device that's old covered in small amount of food (7)
I believe the answer is:
toaster
'kitchen device' is the definition.
(I've seen this before)
'old covered in small amount of food' is the wordplay.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'covered in' means one lot of letters goes inside another.
'small amount' becomes 'taste' (I've seen this in another clue).
'of food' becomes 'r' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'o' put into 'taste' is 'toaste'.
'toaste'+'r'='TOASTER'
'that's' is the link.
Can you help me to learn more?
(Other definitions for toaster that I've seen before include "wedding present?" , "DJ" , "Machine for making brown bread?" , "Kitchen gadget" , "Kitchen browner" .)