University of California Agriculture and Natural Resources released information on Apr. 30 about making safe, personalized salsa recipes for home canning. The guidance outlines which ingredient substitutions are allowed to maintain food safety when preparing salsa at home.
This information is important because improper changes to canning recipes can affect the acidity level, which is critical for preventing foodborne illness. Salsa combines both high-acid ingredients like tomatoes or fruit and low-acid items such as peppers or onions, with added acid from vinegar or bottled lemon juice to ensure safety.
The organization recommends using only tested recipes from reputable sources that follow guidelines set by the National Center for Home Food Preservation (NCHFP). According to the release, “even small changes to a tested recipe can impact its overall safety.” For those wishing to create their own salsa recipes, UC Agriculture and Natural Resources advises refrigerating them for up to two weeks or freezing them for longer storage instead of canning.
A few ingredient swaps are considered safe in tested salsa recipes: swapping types of peppers without increasing their total amount; reducing low-acid ingredients like onions, celery, or peppers; adding tomato paste for thickness; reducing sugar or salt; and adding sugar for sweetness. However, “absolutely do not change or reduce the type of acid called for in the recipe,” according to the announcement.
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