In the directions, you'll notice I state to first fill your jar half of the way with solids, and then top them off with your liquid. Filling each jar about halfway full with solid ingredients is a safety issue. Please do not skip this. If you have half solid and half liquid, the heat will penetrate fully throughout the jar.  Be sure you have enough broth that you will be able to cover the solid ingredients in the jar. You’ll want twice the amount of liquid to solid ingredients.  If you realize you will not have enough liquid to fill your jars, there is a simple fix: Top off the jar with a bit of hot chicken broth or water.  If you realize you will not have enough liquid to fill your jars, there is a simple fix. Evenly distribute the soup base you do have. Then, if needed, top off each jar with a bit of chicken broth. (Heat it up first.) This has worked well for me. You could just add water if you don't have extra broth, but it may dilute the flavor if you add too much. If you only need a little bit of extra liquid, hot water works fine.