Deep fryer size controls how well food stays crisp
Oil capacity is the amount of oil held in the reservoir, usually listed in quarts or liters. More oil gives cold food a larger reserve of heat when it enters the basket. That can help the oil return to its set temperature faster, a process called heat recovery. Better recovery matters when you cook frozen fries, wings, or several batches in a row because a prolonged temperature drop lets food absorb more oil before its surface crisps. Capacity alone does not make a fryer suitable for a large meal. The basket must leave room for oil to circulate around the food, and the heating system must keep up after loading. A wide basket with a modest oil reservoir may be better for a single layer of chicken tenders than a deeper, narrower basket with the same stated food capacity. Read food-capacity claims as an upper limit, then plan to cook less than that for more even browning.
