Cut beef knuckle into bite-sized pieces.
Prepare vegetables such as potatoes, carrots, and onions.
Heat cooking oil in a pan and stir-fry the beef knuckle.
Add vegetables and stir-fry together.
Season with salt, pepper, and soy sauce.
Pour in water, cover, and simmer over medium heat.
When the vegetables and meat are cooked, it's ready to serve.