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Should Jam Cool Before Sealing?

David Miller • • 8 min read
Should Jam Cool Before Sealing?

To seal jars
Fill the hot dry jars right to the top - preserves shrink slightly on cooling and a full jar means less trapped condensation. Seal the jars while still hot. This rule applies to all jams, jellies, pickles and chutneys.

Do you let jam cool before putting lids on?

Put the lids on really, really tight, then flip the jars upside down on a clean kitchen towel for 10 minutes. ... After 10 minutes, put the jam jars in the refrigerator, right-side up. Your jam is ready when it's cold, and you are going to freak out because it's so delicious!

Do you have to wait for jam to cool before sealing?

After jam or jelly is boiled hard, remove from the heat and skim and gently stir every minute for 5 minutes, to help prevent the fruit floating. Then fill the jars while the jam is still hot! Also when you remove the jars from the water bath, leave them for about an hour to start cooling and seal.

David Miller
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David Miller

David Miller brings 15 years of experience in global economics, personal finance strategy, and market dynamics. He specializes in turning complex economic trends into actionable insights for everyday readers.