Chinese broccoli should be almost all stem and green leaves. Look for Chinese broccoli with minimal open flowers (lots of open white flowers means that the Chinese broccoli is past its prime and bitter.
You can also tell from the cut stems if the Chinese broccoli will be perfect or too old. See the bottoms of these cut stems? It’s milky-translucent and smooth. If the bottoms of the stem have a hard white circle in the middle (instead of smooth, milky and translucent) it will probably be past its prime and taste tough and bitter.
Photo below is Chinese Broccoli…see the beautiful stem-bottoms?
3 tablespoons soy sauce
3 tablespoons oyster sauce
3 tablespoons Shaoxing wine, sake or dry white wine
1 tablespoon sugar
1 tablespoon tapioca starch or cornstarch
1 teaspoon dark sesame oil
1 pound beef sirloin, thinly sliced
1 pound fresh or 10 ounces dried noodles
2 tablespoons vegetable oil
3 large garlic cloves, crushed and finely chopped
1.25 cups chicken or vegetable stock
1 pound Chinese broccoli or regular common broccoli, cut into bite-size chunks or florets
Freshly ground black pepper cook