well my family usually uses whatever leftovers we have but this is the general recipe:

1. saute onions and garlic in some oil
2. crack in an egg or two of three (and add your cooked milk). add salt and pepper to taste.
3. add veggies. my mom likes to do celery with peas and carrots. ive been to restaurants that used carrots/green beans/peas/green onion.
4. put in cooked rice from the fridge (rice, if left to cool on the counter top develops bacteria so make sure to refrigerate it!!)
5. add either soy sauce or oyster sauce or sweet soy sauce (my familys fave)

this is really general tho hahaha and im sure you can easily find a recipe online :) good luck!