What is the subject in sentence you cook outside until dark?

The subject of the sentence "You cook outside until dark" is you.

Here's why:

* Subject: The subject of a sentence is the person or thing performing the action.

* Verb: The verb is the action word, which in this case is "cook".

* Subject-Verb Agreement: The subject and verb must agree in number (singular or plural). Since "you" is singular, the verb "cook" is also singular.