The term 'Follow a Recipe Directive' can be summarized by two crossword solutions: STIR (4 letters) and STIRIN (6 letters). STIR is an action verb that means to mix ingredients together with a spoon or other utensil. STIRIN is a gerund form of the verb, which is used to describe the act of stirring. Both words are commonly used in recipes to indicate that the cook should mix the ingredients together.