Vacuum Sealing - Do's and Don'ts
Introduction: Top Food Science and Safety FAQs
If you’d like to find out more about the FoodSaver vacuum sealing system, including which foods are suitable for vacuum storing using the device, our Science & Safety FAQ page features helpful information you can use to make an informed decision about the right course of action to take when sealing certain types of food.
Are there any foods that I should not vacuum package?
Yes, we wouldn’t recommend vacuum sealing garlic, mushrooms, soft cheese or broccoli, as these are liable to go bad even after being vacuum sealed.
Can FoodSaver® Bags be washed and reused?
Yes, FoodSaver bags can be used again, though this depends on the bag’s previous contents. If, for instance, it was used to store fresh meat or fish, the bag should be disposed of due to the risk of contamination. Even after washing, bags which have contained raw meat, fish, eggs or un-pasteurised cheese may contain harmful bacteria, so these must be disposed of promptly after use. For other items, such as vegetables, breads and dry goods, the bags can be washed in warm soapy water and reused.
Can frozen food be vacuum packaged?
Yes, frozen food can be vacuum sealed using the FoodSaver system. However, always be careful when sealing food with sharp edges, as this could penetrate the plastic vacuum bag. In such cases, the sharp edge should be wrapped in paper towel before sealing. This will not hamper the taste or texture of the food.
Can tomatoes be vacuum packaged?
Yes, it’s possible to vacuum package whole tomatoes, but please be aware that when freezing tomatoes, this may impact the texture and flavour after thawing. We would not recommend vacuum sealing tomatoes to store in the fridge or at room temperature.
Can foods be defrosted while still in the FoodSaver® Bag?
Can cooked food be vacuum packaged?
Yes, but not tomatoes. Before sealing any cooked food items, make sure they have cooled down to room temperature, otherwise you risk bacterial growth.
Can celery be vacuum packaged then frozen?
No, given its high water content, celery is not suitable for home freezing. However, if you vacuum package washed and chopped celery before putting it in the fridge, it will last for up to six weeks — giving you plenty of time to use what you need without any going to waste.
How can berries be vacuum packaged without crushing them?
If you want to retain the freshness of your berries without crushing them during the vacuum sealing process, we’d recommend freezing them thoroughly first. Once the berries have hardened, place them in a vacuum bag, seal them and pop them in the fridge. Alternatively, you could use the FoodSaver Vacuum Sealing Canister, which won’t crush the berries when they’re sealed. You can expect your berries to last for up to a week longer using this method.
Why can't certain vegetables be vacuum packaged?
Cruciferous vegetables, like broccoli, Brussels sprouts, cabbage and cauliflower release gases when stored, which would expand the vacuum bag and cause the vegetables to rot over time. There is a way around this however - start by blanching the vegetables, before leaving them to cool. Once they’re at room temperature, dry them off, vacuum seal them and pop them in the freezer.
Can mushrooms be vacuum packaged?
Unfortunately, fresh mushrooms cannot be vacuum sealed.
Why does my vacuum packaged meat turn brown? Is it safe?
Vacuum packaged red meat may begin to turn brown due to the lack of oxygen in the bag, but it remains safe to eat.