This cold, long winter will be a memorable one for many. Hopefully you made use of your reserve of fresh and preserved foods, but you may have made your way through it all! If you are already thinking about preparing for next year, then you may like the idea of canning soup to bring delicious and nutritious warmth during the coldest days.
Different from the vast majority of USDA canning recommendations, our recommendation for Canning Soup allows you to have some choice of vegetables, dried beans or peas, meat, poultry, or seafood. However, that does NOT mean that it is safe to can just any combination and proportions of ingredients, sorry! For your safety, please regard these key precautions before before getting out your pressure canner (and yes, a pressure canner is required for canning soup):
- Our recommendation for canning soup does NOT allow you to include noodles or other pasta, rice, flour, cream, milk or other thickening or dairy ingredients.
- The procedure for canning soup says “Each vegetable should be selected, washed, prepared and cooked as you would for canning a ‘hot pack’ according to USDA directions”, which means that there must be a canning recommendation for each added ingredient. As examples, for this reason we cannot recommend adding cabbage nor cured meats like cured ham to canned soup.
- It is also very important when canning soup that you “Fill jars halfway with solid mixture.” The reason behind filling the jar 1/2 with solids and 1/2 with liquid is to ensure the safety of the product. Our recommendation for canning soup may have a substantial amount of variability based on which vegetables and/or meats are selected and in what proportions. The 1:1 liquid to solid ratio ensures that a certain rate of heating occurs so that the dangerous bacterial spores of botulinum will be destroyed no matter which ingredients (that are noted in the recommendation as acceptable) you select and prepare as directed. Heat transfers more easily and quickly through liquid than through solids and dense mixtures, so a new canning process time would have to be determined through product testing if you were to increase the solid to liquid ratio.
If you choose to follow canning recommendations from another source, then you are choosing to trust their product testing of their recipe, procedure, and process time — they are responsible for their own product testing and you could certainly contact them if you have questions about their recommendations.
Our canning recommendations are meant to be followed exactly as written, and we unfortunately cannot provide individual testing of homemade recipes. If you are still wondering if you can can your favorite homemade soup recipe at home, please read our Burning Issue: Canning Homemade Soups. Remember too that once you can soup as recommended, you can add your choice of ingredients AFTER you open the jars and re-heat the soup for serving!