Cut pork into 1-inch cubes and season with salt and white pepper
Beat eggs and coat pork cubes in egg, then dredge in cornstarch
Deep fry pork in oil at 350°F (175°C) until golden and crispy, about 3-4 minutes
Remove pork and set aside
In a bowl, mix sugar, vinegar, soy sauce, and ketchup to make the sauce
Heat oil in a wok, sauté garlic and onion until fragrant
Add bell peppers and stir-fry for 1 minute
Pour in the sauce and bring to a boil
Add the crispy pork and toss to coat evenly
Cook for 1-2 minutes until sauce thickens
Serve immediately with steamed rice
Tips
Have all ingredients prepped and measured before you start cooking. Chinese stir-fry moves fast once the wok is hot - there is no time to chop or measure mid-cook.