«إِنِّي أَرَانِي أَعْصِرُ خَمْرًا»
I saw myself pressing wine—that is, pressing grapes.
In Qur'an 12:36 the material pressed is grapes, whereas the word “wine” designates what the pressed material may become later. The present object is named by its expected future state.
The expression does not assert that grapes already are wine. The transferred name anticipates the outcome, which is the hallmark of i'tibar ma yakun.