Processing time will vary depending on how you prepare the tomatoes. Do you pack them hot or raw, whole or crushed, pieces or juice? Are you using a water bath canner or a pressure canner? To be sure you have the correct information, we encourage you to get a copy of Canning and Freezing Tomatoes, Pm 638, http://www.extension.iastate.edu/Publications/PM638.pdf.
Reference: Canning and Freezing Tomatoes, Pm 638, Iowa State University Extension
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