Instant Pot Version
Mix together the orange juice, tamari soy sauce, cider vinegar, sesame oil, sugar, garlic, ginger, chilli flakes and salt in a bowl and set aside.
Add the chicken and the sauce into the Instant Pot insert.
Cover your Instant Pot, set the vent to 'sealing,' select the manual or pressure cook button (dependent upon IP model), select high pressure and set the timer to 5 mins.
When done allow to NPR for 10 mins then QPR and open the lid.
Mix the cornflour with 1 tbsp of water and make a lump free paste.
Select the sauté function and add the cornflour paste, mix and sauté for about 3 mins until thickened and switch off the heat.
Stove Top Version
Mix together the orange juice, tamari soy sauce, cider vinegar, sesame oil, sugar, garlic, ginger, chilli flakes and salt in a bowl and set aside.
Add the chicken and the cornflour into a Ziploc bag and mix until the chicken is coated.
Heat the oil in a frying pan and cook the chicken pieces in 2 batches till cooked through and set aside somewhere warm (might take 8-10 mins).
Put the orange sauce in a separate pot over medium and bubble away for about 5 mins until thickened and reduced by about a third.
Switch off the heat, add the cooked chicken to reduce the sauce and mix well.
Slow Cooker Version
Mix together the orange juice, tamari soy sauce, cider vinegar, sesame oil, sugar, garlic, ginger, chilli flakes and salt in a bowl and set aside.
Add the chicken and the cornflour into a Ziploc bag and mix until the chicken is coated.
Add the chicken pieces into the slow cooker insert followed by the sauce and mix.
Cover the slow cooker and cook on high for 2-3 hours or low for 4-5.
If you want a thicker sauce then decant sauce in a small pot over medium heat and bubble away for about 5-7 mins until thickened and return to the chicken.
Recipe Notes
Orange Chicken Info/Tips
The cook and total time are for the Instant Pot version only.
The total cook time does not include the time it takes for the Instant Pot to get to pressure and the time for the natural pressure release.
Plan for additional time.
For fewer calories and carbs, substitute the coconut sugar/dark brown sugar with a calorie-free sugar substitute