Heat oil in a wok/frying pan with garlic and scallion over medium heat, until the oil is hot and the aroma comes out.
Add carrots and stir fry for 10 second before adding snow peas and cabbage.
Turn the heat to medium high, add a big pinch of salt and continue to cook and stir until the cabbage is softened.
Add soy sauce, sake/rice cooking wine, white pepper powder and butter, continue to stir and cook until it reaches the desired texture. Season with salt to taste before removing it from the pan.
Notes
The amount of each vegetable is just a reference, feel free to adjust based on your preference. Mushroom could be a good addition to this dish and sugar snap peas could be used in place of snow peas.