In a bowl, mix together chicken pieces in the rice vinegar, sesame oil and add 1 tablespoon cornstarch. Keep aside while you prepare the rest of the ingredients.
Heat sesame oil in a wok, add the cashews and sauté till lightly browned. Keep aside in a bowl. Add the chicken and sauté until just cooked. Keep chicken aside.
In the wok, sauté the garlic, ginger, spring onion whites and add the sauces along with 1 tablespoon cornstarch.
Add back the chicken and cashews and let it simmer. After 5 mins, turn off the heat. The sauce will thicken as it cools.
Serve hot over Jasmine rice.
Notes
For a gluten-free version, substitute soy sauce with Tamari
For extra spice, you can saute the cashews with dried red chilies. Then mix in the red chilies with the cashews at the end, with the sauce.