Vacuum sealing is a kitchen technique that removes air from specially designed bags or containers before sealing them airtight. This process slows down spoilage, prevents freezer burn, and can extend the shelf life of food by 3 to 5 times compared to conventional storage. Whether you are meal prepping, sous-vide cooking, or buying in bulk, a vacuum sealer is a versatile tool that saves money and reduces waste.
Ingredients
- 1 vacuum sealing machine (chamber or suction type)
- Vacuum sealer bags or rolls (size depends on your machine; typically 8″ x 12″ or 11″ x 16″)
- Food to seal (e.g., raw meat, vegetables, dry goods, or leftovers)
- Paper towels (for patting food dry)
- Optional: Marinade or seasoning
Instructions
- Read your vacuum sealer’s manual to understand its specific settings and safety features. Most machines have a vacuum and seal button, and some have a “moist” or “dry” mode.
- Prepare your food: For raw meat, poultry, or fish, pat the surface dry with paper towels to remove excess moisture. For vegetables, blanch them first (boil for 1-2 minutes, then ice bath) to stop enzyme activity and preserve color and texture.
- Cut a bag to size if using a roll. Leave at least 3 inches (7.5 cm) of extra bag length for sealing. Seal one end of the bag if you are using a roll, following the machine’s instructions.
- Place the food inside the bag. Leave at least 1-2 inches (2.5-5 cm) of space between the food and the open end of the bag. This space is needed for the vacuum seal to form properly.
- If you are marinating, pour the marinade into the bag with the food. For dry goods like flour or coffee, consider using a container or a special canister attachment to avoid powder being sucked into the machine.
- Open the vacuum sealer lid and place the open end of the bag onto the sealing strip, ensuring it is flat and smooth. Close the lid and press the “Vacuum & Seal” button (or the appropriate setting for your machine).
- Watch the machine as it removes air. The bag will tighten around the food. Once the vacuum cycle is complete, the machine will automatically seal the bag. Wait for the seal indicator light to turn off before opening the lid.
- Remove the bag and check the seal by pressing gently on it. The seal should be airtight. If the seal is incomplete, cut the bag open and repeat the process with a new bag.
- Label the bag with the contents and date using a permanent marker. This is essential for tracking storage time.
- Refrigerate or freeze the sealed bag immediately. If you are freezing, lay the bag flat on a baking sheet to freeze quickly, then stack for efficient storage.
Tips
- Pre-freeze moist foods: For stews, soups, or cooked meats with liquid, freeze them in a container or on a tray for 1-2 hours until solid, then vacuum seal. This prevents liquid from being sucked into the machine.
- Use the right bag: Only use bags specifically designed for vacuum sealers. Regular zipper bags or inexpensive storage bags are not suitable and will not create a proper seal.
- Don’t overfill: Leave enough space at the open end of the bag. Overfilling prevents the machine from forming a good seal and can cause the bag to wrinkle.
- Keep the sealing strip clean: Wipe the sealing strip and the inside of the machine after each use. Food particles or moisture can interfere with the seal.
- For delicate foods: Use the “gentle” or “pulse” mode if your machine has one, or place a paper towel inside the bag to protect soft items like berries or bread from being crushed.
Serving Suggestions
Vacuum-sealed food is not served directly from the bag in most cases. Instead, use the sealed packages for sous-vide cooking (immerse the bag in a water bath at a precise temperature), for quick defrosting (place the bag in cold water), or for storing leftovers. When ready to serve, remove the food from the bag and cook or reheat it as you normally would. For example, vacuum-sealed chicken breasts can be seasoned and sous-vide cooked at 145°F (63°C) for 1 hour, then seared in a pan for a perfect meal.
Variations
- Chamber vacuum sealers: These machines pull air from the entire chamber, allowing you to seal liquids and moist foods without pre-freezing. They are more expensive but more versatile.
- Canister attachment: Many suction vacuum sealers have a port for a canister, which is great for storing dry goods like nuts, coffee, or cereal without using bags.
- Marinating: Use the vacuum sealer to quickly marinate meat. The vacuum action forces the marinade into the meat, reducing marinating time from hours to minutes.
- Meal prep: Portion out cooked meals (like rice and stir-fry) into individual bags, vacuum seal, and refrigerate or freeze for grab-and-go lunches.
Storage and Reheating
Vacuum-sealed raw meat, poultry, and fish can be refrigerated for 1-2 days longer than conventional storage, but the USDA recommends freezing for longer-term storage. Frozen vacuum-sealed meat can last 6-12 months without freezer burn. Cooked leftovers, once sealed, will keep in the refrigerator for 3-4 days. To reheat, remove the food from the bag and use a microwave, oven, or stovetop. For sous-vide reheating, you can place the sealed bag in a water bath at 140°F (60°C) for 20-30 minutes until heated through. Always reheat leftovers to an internal temperature of 165°F (74°C) as measured with a food thermometer.
Frequently Asked Questions
Can I vacuum seal raw meat and then cook it sous-vide? Yes, vacuum sealing is ideal for sous-vide. For whole cuts of beef, pork, veal, or lamb, cook to a safe minimum internal temperature of 145°F (63°C) with a 3-minute rest. For ground meat, cook to 160°F (71°C). Always check with a food thermometer.
Can I vacuum seal vegetables without blanching? You can, but they will lose quality faster. Blanching (boiling for 1-2 minutes, then ice bath) inactivates enzymes that cause loss of color, texture, and flavor. For best results, blanch before vacuum sealing.
Why is my vacuum sealer not sealing properly? Common causes include a dirty sealing strip, overfilling the bag, or using the wrong type of bag. Make sure the bag is dry and free of wrinkles where it sits on the sealing strip. Also, check that you left enough space (at least 1 inch) for the seal.
Can I reuse vacuum sealer bags? Yes, if the bag is in good condition and has only been used for dry foods. Wash it in warm soapy water, rinse thoroughly, and let it dry completely. Do not reuse bags that contained raw meat or fish to avoid cross-contamination.
Does vacuum sealing make food safe indefinitely? No. Vacuum sealing slows spoilage but does not kill bacteria. Perishable foods still need to be refrigerated or frozen. Always follow safe food handling guidelines: refrigerate within 2 hours, and use leftovers within 3-4 days.
Can I vacuum seal liquids like soups? Yes, but you need to pre-freeze them first (for suction machines) or use a chamber sealer. Freeze the soup in a container until solid, then vacuum seal the frozen block. This prevents the liquid from being sucked into the machine.
Related
- Kartoffelpuffer German Potato Pancakes Recipe
- Kirkland Shrimp Cocktail: Make It at Home
- Kohlrabi Potato Pancakes: Crispy & Easy Recipe
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
Spotted an error? Tell us and we will correct it (corrections policy).