least 165 degrees, approximately 20 minutes. i always cook mine a little longer just because i like chicken that way. and if you properly seared it, it will remain juicy (unless you let it cook for an hour;).
once chicken is fully cooked, remove from pan and keep warm. in the same skillet, add another tablespoon of peanut oil, orange juice, soy sauce, rice vinegar. add chopped chestnuts and chopped beets. stir all ingredients together, loosening the chicken bits on the bottom of the skillet. increase temperature to medium-high and bring to a boil. once a boil is reached, reduce heat and simmer for about 3 minutes. add spinach and gently 