Mad Cook
Master Chef
Not sure if I'm in the right place for this but there doesn't seem to be anywhere else.
I've just been watching a Food Network UK programme called "Pioneer Woman" with a deeply irritating woman who wouldn't know a pioneer if it got up and bit her. However, that isn't my point.
She was making strawberry jam with a group of children as part of their home schooling syllabus. She made the jam in the same way as we do here but when she got to potting it up she diverted from what we do.
She sterilised her jars in boiling water - so far so good but instead of putting them in the oven to dry (which further sterilises them) she potted the jam directly into wet jars, put on the seals and then proceeded to can the jam.
She explained that if she potted the jam and sealed it and just put it on the shelf without canning it, the jam would go mouldy. Well, yes, of course it would - because she used wet jars. A no-brainer to us jam makers over here.
I've come across mention of canning jam before on another American cookery forum and it puzzles me. When we make jam we pot into dry sterilised jars and seal while the jam is still scaldingly hot and in all my years of jam making (my grandmother taught me when I was seven years old) I have never had a sealed jar go mouldy. The heat of the contents ensures a good seal and I've opened jars of jam more than a year after making and they've been perfect. I can't ever remember pots of jam made by my mother or either grandmothers going off in the sealed jars. We use the method endorsed by the Women's Institute, who are the jam experts over here. They have even advised the professionals and the government on issues surrounding jam making and other forms of food preservation.
OK, so is it a climate issue in the USA? I know you generally speaking have hotter summers than we do and some areas must be more humid even than we are.
Is it a case of "We do it because someone who was trying to sell canning equipment told our great-great-grandmothers to do it"? Or is there another reason that has escaped me?
One point that I missed, because they were measuring the sugar in cups and didn't say anything about the ratio of fruit to sugar, which is important for properly preserving the jam the way we make it. Is the canning process used because the sugar:fruit ratio is different? Usually, we use a pound of sugar to a pound of fruit for jams. I could understand the canning thing if a smaller amount of sugar is used in American recipes.
I can see the point of canning (or bottling as we call it) fruit to eat later as a dessert, for example, but not for canning already sterile jam.
And just out of interest, do you can jam in Canada or Australia as well?
I've just been watching a Food Network UK programme called "Pioneer Woman" with a deeply irritating woman who wouldn't know a pioneer if it got up and bit her. However, that isn't my point.
She was making strawberry jam with a group of children as part of their home schooling syllabus. She made the jam in the same way as we do here but when she got to potting it up she diverted from what we do.
She sterilised her jars in boiling water - so far so good but instead of putting them in the oven to dry (which further sterilises them) she potted the jam directly into wet jars, put on the seals and then proceeded to can the jam.
She explained that if she potted the jam and sealed it and just put it on the shelf without canning it, the jam would go mouldy. Well, yes, of course it would - because she used wet jars. A no-brainer to us jam makers over here.
I've come across mention of canning jam before on another American cookery forum and it puzzles me. When we make jam we pot into dry sterilised jars and seal while the jam is still scaldingly hot and in all my years of jam making (my grandmother taught me when I was seven years old) I have never had a sealed jar go mouldy. The heat of the contents ensures a good seal and I've opened jars of jam more than a year after making and they've been perfect. I can't ever remember pots of jam made by my mother or either grandmothers going off in the sealed jars. We use the method endorsed by the Women's Institute, who are the jam experts over here. They have even advised the professionals and the government on issues surrounding jam making and other forms of food preservation.
OK, so is it a climate issue in the USA? I know you generally speaking have hotter summers than we do and some areas must be more humid even than we are.
Is it a case of "We do it because someone who was trying to sell canning equipment told our great-great-grandmothers to do it"? Or is there another reason that has escaped me?
One point that I missed, because they were measuring the sugar in cups and didn't say anything about the ratio of fruit to sugar, which is important for properly preserving the jam the way we make it. Is the canning process used because the sugar:fruit ratio is different? Usually, we use a pound of sugar to a pound of fruit for jams. I could understand the canning thing if a smaller amount of sugar is used in American recipes.
I can see the point of canning (or bottling as we call it) fruit to eat later as a dessert, for example, but not for canning already sterile jam.
And just out of interest, do you can jam in Canada or Australia as well?
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