Unusually precise instructions (7)
I believe the answer is:
recipes
'instructions' is the definition.
(I know this)
'unusually precise' is the wordplay.
'unusually' indicates anagramming the letters.
'precise' anagrammed gives 'RECIPES'.
(Other definitions for recipes that I've seen before include "Directions for making a dish" , "Instructions for making" , "instructions for cook" , "Directions for the cook" , "Precise (anag.)" .)