Vacuum-sealing jars keeps dry goods like coffee, nuts and flour fresh. You need a sealer with an accessory port and a jar sealer attachment.
Sealers with an accessory port
- Anova Precision Pro
- Avid Armor USV20 (chamber sealer with port and hose)
- FoodSaver V4400 and Elite Liquid+ via their handhelds
The Anova chamber sealer and Anova slim don't have one.
Steps
- Fill the jar, leaving about an inch of headspace.
- Place a new lid (no ring) on top and fit the jar sealer attachment over it.
- Connect the hose and run the accessory cycle.
- Remove the attachment; the lid should be held down by the vacuum.
This isn't canning
UConn Extension notes vacuum packing doesn't replace heat processing. Jar sealing is for dry goods and refrigerated food, not shelf-stable canning.
