Heat a heavy bottomed pan, wok or frying pan. Add 1 tablespoon of vegetable oil
When the oil is hot add the diced onion and garlic. Saute , stirring, until the onions start to sizzle, over medium heat for 2-3 minutes or until soft.
Add chopped kimchi and stir fry, stirring frequently for 2-3 minutes. Add sliced mushrooms (choice of your vegetables) and stir until mushroom is cooked and all water is nearly evaporated, about 3-4 minutes.
Add rice and break up the rice in the pan with spatula. Stir all ingredients together
Add kimchi juice to the fried rice. Cook, stirring, until the rice is absorbed the sauce and is very hot.
Season with soy sauce, salt and sesame oil.
Stir everything together
Taste, and adjust with more kimchi juice, salt, sesame oil and soy sauce.
Reduce heat to medium low, cook rice for few more minutes, make sure not to burn the rice at the bottom of the pan.