Whether you make your own or buy a it from a store, the basic ingredients in poultry seasoning are usually dried sage and thyme, which give the blend an aromatic, woodsy flavor. Other ingredients might include marjoram, rosemary, celery seed, and black pepper.
When it comes to vegetable soup, using poultry seasoning is a simple way to add depth when you don't have the time or ingredients to make a rich broth. For a quick veggie soup, we usually start by sautéeing some onions and garlic with a dash or two of the seasoning, and then add any combination of vegetables and water. We'll often do this if we have just one or two vegetables on hand, for instance Napa cabbage and potatoes.
What are your quick tips for enhancing a simple vegetable soup?