Knowledgebase
Apple butter/applesauce canning #812648
Asked September 29, 2022, 3:37 PM EDT
Clackamas County Oregon
Expert Response
Thanks for contacting Ask Extension. It is OK to home can under ripe apples into apple butter or applesauce if you follow a tested recipe published by the National Center for Home Food Preservation, the USDA Complete Guide to Home Canning, or a cooperative Extension Service, including the OSU Home Food Preservation Program. Under ripe apples have a lower acidity level (pH 3.2), compared to ripe apples (pH 3.9), so there is not a food safety concern in this case. You may want to add a little additional sugar and/or cook the fruit for a bit longer than is specified in the recipe to achieve the desired taste or texture. The storage conditions that you describe are not ideal but should not affect the degree of safety in the short term. Recommended storage conditions for apples include a temperature range between freezing and below 40 degrees F, and a high humidity level.
National Center for Home Food Preservation:
The USDA Complete Guide to Home Canning:
USDA's Complete Guide to Home Canning | National Institute of Food and Agriculture
OSU Home Food Preservation Program:
https://extension.oregonstate.edu/food/preservation