Ingham B.H. Canning Salsa Safely

University of Wisconsin-Extension Cooperative Extension, 2000. — 13 p. — (Wisconsin Safe Food Preservation Series)Salsa can be a fun easy way to preserve peak-of-season tomatoes to enjoy all year.
Most salsa recipes mix low-acid foods,such as onions and peppers, with acid foods, such as tomatoes.The salsa recipes in this bulletin have been tested to ensure that they contain enough acid to be processed safely in a boiling water canner.