KFC's hamburger embryos are directly supplied by Manhattan, and only the embryos of rural hamburgers (3.5 inches) can be bought outside, and others are also sold (4 inches), but the requirements are worse than those of KFC. (Sesame coverage will not reach 95%). Hamburger fried chicken is usually made of Dacheng chicken (frozen or chilled chicken leg meat, sliced), submerged with KFC's special seasoning, and then put into chilled chicken warehouse for more than two hours. Wrap the chicken leg with the prepared special flour before frying. Finally, fry in oil at 360 degrees Fahrenheit for 7 minutes.

The above answer is very general. If you want to know more, you can actually understand it after working in KFC for a month.