The stir fry cooking works in this manner. First, a batch of orders is cooked in a wok by one person The cooking depends upon the number of orders in the batch. The Crop one question at a time is 3 minutes. For each additional order in the batch, it takes 0.5 minutes more to cook. Thus, cooking two orders in a batch takes 3.5minutes, cooking three orders takes 4 minutes, and so on. Set-up Time must therefore be 2.5 minutes