Regardless of whether the jars are treated in wet or dry heat, the lids should be in hot water before use. This is not for sterilization, but to soften the glue. Place the lids in water, boil and leave them until you’re ready to use.
One more thing about sugar. We are all using Italian plums that vary in the amount of sugar they have. The season, date picked, genetics of the tree, location, and weather means that each of us starts with fruit that varies as to the sugar in the fruit itself. That is part of the reason for different amounts of sugar added. Take the sugar added with a grain of ……errr. As they say, your mileage may vary.
But the amount of sugar in the final batch is part of what protect it against dangerous bacteria. One shouldn’t need a pressure cooker as the amount of sugar, the acidity and heat are enough to prevent pathogenic bacteria.
If you are not an experienced canner, make small batches and store in the refrigerator or freezer. The more levels of security make it safer including using it quickly, preparing in small amounts, keeping it at 212 F from start to finish, using sterile jars/lids/tools, and checking your vacuum.
High acid, high sugar, and high salted foods are less likely to become contaminated with dangerous bacteria. For all OTHER foods, you must use a pressure canner or other methods such as dehydration/freezing.
A great resource is https://nchfp.uga.edu/publications/publications_usda.html, the National Center for Food Preservation.
]]>Marie thank you for this. I actually used the 2 to 1 plums/sugar ration and found it far to sweet…I will be taking that batch out of the jars and add another batch of cooked plums to it without the sugar so all is not lost.
I realize most people prefer the sugary but when it exceeds the flavor of the fruit it’s just a no go for me… sorry.
Ok you got me with that dark rum touch. Do you add sugar to this recipe of “Sugar Plum Jam” ?? Hope you see this reply to your post of 2014!
]]>We also have a quince tree and make Paradise Jelly, an old American traditional of quince, apples and cranberries, with a flavor all its own. We’ve made it three times now and each time it’s a different, rich shade of pink. The tree only produces a good crop alternating years, unfortunately.
I just found your blog. Very, very nice. I look forward to getting to know and enjoy it.
Steven
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