Chop Soui - cooking recipe

Ingredients

2 onions, chopped
2 celery root, diced
1 carrot, finely diced
1/4 cup peanut oil (I used only 1 tablespoon in a large non-stick skillet)
2 garlic cloves, chopped
1 tablespoon fresh ginger, chopped
3/4 lb lean ground beef (I had 1 lb)
6 cups bean sprouts
3 tablespoons soy sauce
salt and pepper

Preparation

In a large skillet or a wok, stir-fry the onions, celery and carrot in half the oil until onion begins to brown. Add garlic and ginger. Stir-fry 1 minute. Remove from the skillet and set aside.
In the same skillet, stir-fry the beef in remaining oil at high heat, breaking it until it's completely cooked and cooking liquid has evaporated.
Add the cooked veggies and bean sprouts. Add soy sauce and reheat well. Adjust seasoning.