The Fresh & Save Gratin Dish works with Zwilling’s vacuum pump to keep food fresh up to five times longer than non-vacuum storage. Made of sturdy borosilicate glass, this long, shallow, rectangular container is ideal for easy storage of lasagnas, gratins and other baked meals in the refrigerator and freezer. It’s also handy for marinating meat. Designed for efficient stacking, this dish is a great space saver and organization helper. This gratin dish is ovenproof with its lid