Preparing and canning zucchini soup in large batches lets you enjoy flavorful, homemade soup without spending hours in the kitchen before each meal. Properly preserving the flavor of your soup means using exclusively preservable ingredients. Like other vegetable soups, the ingredients in each zucchini soup recipe vary. Selecting the most can-friendly ingredients and using the right equipment will ensure that your zucchini soup tastes as delicious in a few months as the day you made it.