Place a soup pot over medium heat and coat the bottom with oil. Add the onion, garlic, carrots, celery, and marjoram. Cook and stir for about 6 minutes, until the vegetables are softened but not browned.
Pour in the stock and bring the liquid to a boil. Turn heat down and simmer until vegetables are tender, about 10 minutes. Add the noodles and turkey and simmer until noodles are cooked through – timing varies with the noodles. Season with salt and pepper. Sprinkle with chopped parsley before serving. Pass with lemon if desired.
A good broth or stock will make your soup taste great, but if for some reason it tastes a bit flat, a few things can help. Maybe it needs salt or pepper, and a bit of acidity can brighten a soup – a small squeeze of lemon, a few drops of vinegar. If your broth is just too weak, you could add a bit of chicken soup base.
Find it online: https://frugalhausfrau.com/2011/11/15/turkey-noodle-soup/