You need gochujang Yangnyum. Cooked rice

All you will do is finely sliced vegetables(carrots, pointed cabbage(cabbage), onions, leeks, potatoes(optional), cucumber, peppers, bulgogi for nonvegans, for the vegans  fried tofu(temple kimbap), shiitake mushrooms or just Gochujang Yangnyum

Stir fry  each vegetable(except cucumber) for 20-30 seconds.