Cool & Seal Jars
19:26
21:30
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At 19:26 in
Simple preserves: How to make blackberry Jam and Jelly!
What happens here
Once a jar is filled, sealed, and wiped clean, immediately flip it upside down onto a clean towel laid out on a countertop. This inversion helps create a vacuum seal as the jars cool. Leave the jars undisturbed overnight (or for several hours) to allow them to cool completely and seal properly. The seals are indicated by a 'popping' sound and a concave lid when pressed.
Goal: Invert the filled and sealed jars onto a towel to cool and create a vacuum seal.
Tools and materials
- Clean towels
- Filled and sealed jars
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