We've all been there: You want to throw together a quick soup but you don't have any stock on hand. The first question that pops up is whether stock is necessary. The answer depends on what kind of soup you are making. A stock is more important with a simple broth-based soup, whereas a more complex pureed or cream-based soup might be OK with just water. Ideally, though, you will always use stock, as it is the foundation of your soup and really adds flavor. Read on for a method of creating a quick, vegetable stock that will enhance any soup and can be made at the last minute.