01 - Place the chicken thighs or breasts in the bottom of the slow cooker.
02 - In a medium bowl, whisk together soy sauce, honey, rice vinegar, 2 tbsp water, brown sugar, garlic, and ginger until well combined.
03 - Pour the sauce evenly over the chicken in the slow cooker.
04 - Cover and cook on high for 4 hours or on low for 6 hours, until the chicken is tender and reaches an internal temperature of 165°F.
05 - Remove the chicken from the slow cooker and shred or slice as desired.
06 - In a small bowl, mix cornstarch with 1 tbsp water to create a slurry. Stir the slurry into the sauce in the slow cooker.
07 - Turn the slow cooker to high and cook uncovered for 10-15 minutes, stirring occasionally, until the sauce thickens.
08 - Return the chicken to the sauce and toss to coat evenly. Serve hot, garnished with green onions and sesame seeds if desired.