In a bowl, add vinegar, soy sauce, black pepper, sugar and salt.
Mix well until the sugar dissolves. Keep aside.
In another bowl, add eggs and salt. Beat them together. Keep aside.
Heat a wok over a high flame. Add oil.
Once the oil is hot, add garlic and onion. Cook until the raw smell goes away.
The garlic should be slightly golden and the onion should be translucent.
Add cabbage. Cook for 1-2 minutes.
Add green and red bell peppers. Cook for 30 seconds.
Push the veggies to one side of the wok.
Pour the beaten egg mixture into the wok.
Gently swirl the eggs. Allow them to set a little.
Then scramble them for about a minute.
Combine everything together.
Add the cooked rice.
Slowly pour the sauce mixture along the sides of the wok.
Gently toss everything to combine. Avoid overmixing, as it might break the rice.
Egg fried rice is ready to serve!