Pressure-Canning Combination Foods
Use the pressure canning technique for all combination foods — it’s the only definitely safe canning method when combining foods, especially when canning combined low-acid and high-acid foods. Process all combination foods in a pressure canner.
For best results, use these tips when making combination foods:
Cut all ingredients uniformly to ensure even heating. Get the pieces as close to the same size as possible.
Use the longest processing time given when combining foods. For example, the processing time for only corn in a 1-quart jar is 1 hour and 25 minutes, and for only lima beans in a 1-quart jar is 50 minutes. Therefore, the correct processing time for combining corn and lima beans in a 1-quart jar is 1 hour and 25 minutes.
Always use the jar size recommended in your recipe. Some combination foods may be canned in either pints or quarts; other foods may be suited only for pints. Use the jar size stated in your recipe.