Wash the konjac thoroughly and cut it into bite-sized pieces.
Finely chop the onion, carrot, and zucchini.
Heat oil in a pan and stir-fry the onion, carrot, and zucchini.
When the vegetables are cooked, add the konjac and stir-fry together.
Add the black bean sauce and water, then bring to a boil.
Once the sauce thickens, transfer to a plate and serve.