Food stays fresh up to five times longer compared to traditional storage methods without vacuum. The effect: All the freedom in the world! Do a big grocery shop once a week and store fresh fruits, vegetables, meat, and fish in the vacuum containers and bags from the series in the fridge or freezer, enjoying the benefits of your own fresh market stand at home. Prepare your meals days in advance and enjoy them as fresh as on the day of preparation. Cook meat sous vide or marinate meat for the grill in just 30 minutes in the vacuum bags and containers. Like the other boxes in the series, the vacuum gratin dish is made of sturdy borosilicate glass. This long, flat, rectangular container is perfect for easy storage of lasagnas, gratins, and other baked dishes in the fridge and freezer. It's also handy for marinating meat. The vacuum bags can be used as waste bags for your prepared slow-cooking ingredients. Whether you're chopping vegetables for freezing or searing meat portions for the slow cooker, they are ideal for batch cooking preparation mode. Even reheating food in the microwave directly in the containers with lids is a breeze. And when you have nothing to store, simply stack the dishwasher-safe containers inside each other.