Heat sesame oil and olive oil in a nonstick pot or pan over high heat.
Add steak to the pan and stir fry for 5 minutes or until pinkness is gone and beef is light brown.
Add red, yellow, green peppers, onions, garlic, ginger and saute for 30 seconds.
Add soy sauce, vinegar, sriracha sauce, honey, dissolved cornstarch and mix until combined.
Cook for a few more minutes until sauce is reduced and thickened to your desired consistency.
Garnish with red chili flakes (optional) and green onions. Enjoy!
NOTES
Read all my tips above.
Leftovers can be stored in a sealed container in the fridge for up to 3 days.