For a time I worked in a convenience store as a clerk and cook and I used a deep fryer quite a bit for cooking battered chicken and French fried potatoes.
Of course the chicken doesn’t start out battered. It comes delivered frozen in big cardboard boxes. Before the chicken is ready for the cooking part it must be prepared and time to thaw out. Each piece of chicken is rinsed in cold water, then put in a vat of tenderising, salty water to soak for several hours in a refrigerated area. It is again rinsed and kept cold, until needed for cooking.
When needed for cooking the chicken is breaded in a special spicy flour mix, dipped in spice water, and breaded with mix again. Each piece is than carefully placed in the boiling oil in the deep fryer; starting with the large, meaty pieces, and finishing with the thin bony pieces. This gives the thick meaty pieces more time to cook. They get the hottest oil in the pot to start off the cooking process. The deep fryer is on a timer and part way through the cooking process the timer sets off an alarm which notifies you that it’s time to stir the chicken, so it gets all sides cooked evenly, even the sides...