Herbs from countertop to put on nettle rash (6)
I believe the answer is:
chives
'herbs' is the definition.
(I've seen this before)
'countertop to put on nettle rash' is the wordplay.
'countertop' becomes 'c' (top of the word 'counter').
'to put on' is a charade indicator (letters next to each other).
'nettle rash' becomes 'hives' (synonyms).
'c'+'hives'='CHIVES'
'from' is the link.
(Other definitions for chives that I've seen before include "Plants" , "Herb of the onion family" , "Herbs with long tubular onionflavoured leaves" , "Plant of onion family" , "Leaves used as onion-flavoured seasoning" .)