Vacuum Sealing Containers: How to Use Them Right

Vacuum sealing containers are reusable storage solutions that remove air from the container to keep food fresher longer. Unlike vacuum bags, these rigid containers are perfect for liquids, leftovers, and pantry staples because they won’t crush delicate items and can be stacked neatly in the fridge or cupboard. This guide walks you through the best way to use them, from filling to sealing, so you get the maximum benefit from your investment.

Ingredients

1 vacuum sealing container (any size, e.g., 4 cups / 950 ml)
Food to store (e.g., 2 cups / 300 g of leftover stew, 1 cup / 150 g of berries, or 1 cup / 90 g of leafy greens)
Vacuum sealer with hose attachment (or handheld vacuum sealer)
Clean, dry cloth for wiping the rim

Instructions

Prepare your food. Cooked food should be cooled to room temperature (but not left out for more than 2 hours). For liquids like soup or stew, leave at least 1 inch (2.5 cm) of headspace at the top of the container to prevent overflow during vacuuming.
Fill the container. Place the food inside, leaving the required headspace. For dry goods like flour or cereal, fill to about 3/4 full to allow room for the lid and vacuum action.
Wipe the rim. Use a clean, dry cloth to wipe the rim of the container and the underside of the lid. Any moisture, crumbs, or grease can prevent a proper seal.
Attach the lid. Press the lid onto the container, ensuring it clicks or snaps into place all around. Align any arrows or markers as per the manufacturer’s instructions.
Connect the vacuum hose. Attach the hose from your vacuum sealer to the valve on the lid. Make sure it’s firmly seated.
Start the vacuum. Turn on your sealer and select the “dry” or “moist” setting if available. For liquids, use the “moist” or “gentle” setting to avoid splashing. Let the machine run until it stops automatically or the lid visibly depresses and the vacuum indicator (if any) shows a seal.
Remove the hose. Carefully detach the hose. The lid should remain depressed; if it pops back up, the seal failed. Re-wipe the rim and try again.
Label and store. Write the date and contents on a piece of masking tape or use a dry-erase marker on the lid. Place the container in the refrigerator, freezer, or pantry as appropriate.

Tips

Don’t overfill. Leave enough headspace for liquids to expand slightly when vacuumed; otherwise, they can be sucked into the hose and damage the machine.
For delicate foods like berries or herbs, consider using a low vacuum setting or stopping the vacuum manually before full compression to avoid crushing them. Some containers have a “gentle” valve setting.
Clean the valve regularly. Food particles can clog the valve, preventing a good seal. Wash the lid in warm soapy water (check if it’s dishwasher safe) and air-dry thoroughly before reassembling.
If you don’t have a vacuum sealer, some containers come with a hand pump. Use that instead, but expect a less complete vacuum.

Serving Suggestions

Vacuum-sealed containers are ideal for meal prep. Store individual portions of cooked grains, roasted vegetables, or marinated meats for quick weeknight dinners. They’re also great for keeping salad greens crisp for up to a week, and for storing coffee beans, nuts, or flour to preserve freshness.

Variations

For dry goods: Use a container with a wide mouth for easy scooping. Vacuum sealing doesn’t affect the texture of powders like flour, but it does keep out moisture and pests.
For liquids: Freeze soups or sauces in the container first (without the lid) until solid, then vacuum seal. This prevents the liquid from being sucked out during the process.
For sous vide: While rigid containers are not for cooking in a water bath, you can use them to store pre-sealed sous vide bags, keeping them organized and protected in the fridge.

Storage and Reheating

Vacuum-sealed containers extend the life of refrigerated food to about 3-5 days for cooked dishes (versus 3-4 days normally) and up to 1-2 weeks for fresh produce like berries or greens. In the freezer, they prevent freezer burn, so meats and soups can last 6-12 months. To reheat, remove the food from the container and transfer to a microwave-safe dish or saucepan; do not microwave the container unless it is explicitly labeled microwave-safe. Reheat leftovers to 165°F (74°C) as measured with a food thermometer.

Frequently Asked Questions

Can I vacuum seal liquids like soup? Yes, but you must leave at least 1 inch of headspace and use the “moist” setting if available. Alternatively, freeze the liquid first, then vacuum seal. This prevents splashing and overflow.

Why does my container lose its vacuum after a few days? This is usually due to a damaged gasket or a tiny crack in the lid or container. Check the rubber seal for wear and replace if needed. Also, make sure the rim is completely clean and dry before sealing.

Can I use vacuum sealing containers in the microwave? Most are not microwave-safe, especially the lids, which may contain metal components. Always check the manufacturer’s label. If in doubt, transfer food to a microwave-safe dish before reheating.

Are vacuum sealing containers better than vacuum bags? Containers are reusable, better for liquids and delicate foods, and stack well. Bags are more flexible and take up less space when flat. Choose based on what you store most.

How do I clean the valve on the lid? Many valves can be removed for cleaning. Soak in warm, soapy water, then rinse and air-dry completely before reassembling. Never submerge the entire lid if it has a built-in valve that isn’t removable.

Can I vacuum seal bread or pastries? Yes, but the vacuum will compress them. To avoid this, place a paper towel inside the container to absorb moisture and help keep the bread from getting squished. Store at room temperature for up to 3 days or freeze for longer.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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