1, see: in the process of cooking you can see the overall color of the chicken breast gradually white, slowly floating in the water, it proves that it is almost cooked.
2, insert: you can use chopsticks into the thickest part of the chicken breast, if the chopsticks can be easily inserted, and no blood flow, then the chicken breast and has been cooked; you can also choose to use a knife to cut through the chicken breast, if the chicken breast from the outside to the inside of the meat are white, then it is cooked, but also with the pink color if you need to cook for a while.
3, taste: if it is a small piece of chicken breast, when you smell a strong meat flavor, you can use chopsticks to pick up a small piece of a little taste, if the meat is soft and easy to chew to prove that it is cooked.