Panda Express style Chow Mein
If your noodles are mushy, then you're overcooking them. Vermicelli take barely a minute or two to cook in already-boiling water. Egg noodles take a little longer, but either way, trying the noodles as they start to loosen up is the best way to ensure the right texture.

Remember, you are going to be cooking them again when you stir fry them, so they should be a little underdone when they come out of the broth. Rinsing in cold water will arrest the cooking process and also wash off the starch that can make the noodles stick to the wok when frying.