Heat a cooking pan and add oil.
Then add asafoetida, green chillies, and ginger and fry a little.
Then add the onion and soften it slightly. Do not cook them too much.
Then add carrot and cabbage to it and soften it slightly. You can also add capsicum to it. Mix them all well.
Then turn off the gas.
Add black pepper powder, soy sauce, and vinegar to it and mix them well.
When the mixture cools down, add salt to it. The salt is added later so that the vegetable does not release water after adding salt.