Marinade the diced chicken in a dish:
- Dice chicken thighs and put into a shallow dish.
- Add toasted sesame oil, mirin, soy sauce, brown sugar, ginger, and vinegar to a jar and stir or shake.
- Dump marinade on chicken and let sit for 20 minutes, stirring once.
Cook the chicken
- STRAIN chicken (reserve all the marinade for later)
- Bring a 12" skillet to medium high heat and add vegetable oil to lightly coat the bottom of the pan.
- When hot - add STRAINED chicken and cook for 5 minutes uncovered and undisturbed for the most part.
- Stir at 5 minutes and cook the chicken for 5 more minutes (10 minutes total) or until cooked through.
- Remove the chicken to a plate with a slotted spoon.
- Add the marinade and any juices from the chicken on the plate back to pan and cook down for 3-5 minutes or until the sauce is thick and shiny.
- Add chicken back in and stir to coat and cook for another 2 minutes or until hot.
- Serve over your favorite carb - rice, ramen, or rice noodles.