Answer Line FAQs
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In order to safely can tomatoes, how long should they be processed?

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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For more information, visit http://www.extension.iastate.edu/answerline/, email us at: answer@iastate.edu, or call 1-800-262-3804 (in Iowa) or 1-800-854-1678 (in Minnesota).