CleanCrisp Glass Containers: Borosilicate Cooking Vessels Built for Temperature Swings
The Crispi's defining departure from typical air fryers is that food cooks inside borosilicate glass containers rather than a nonstick metal basket. Borosilicate glass resists thermal shock, the cracking that happens when glass expands unevenly under sudden heat, which is why Ninja says these containers can go from frozen to crispy in minutes without a thaw step first. Two sizes come in the box: a 6-cup container that Ninja says cooks a personal-sized meal in 7 minutes, and a 4-quart container it says fits a 4-pound chicken with vegetables. Owners are split on that last claim, with one fitting a chicken and another finding two Cornish hens a more realistic load, so plan on a small bird. Because the dish is transparent, you can watch food crisp without lifting the pod and letting heat out, a small thing that makes a real difference over an opaque basket. Cleanup is the other win. Fat and oil collect at the bottom of the glass rather than soaking into a mesh basket, food rarely bakes on, and the containers, crisper plates, adapter and lids are all dishwasher safe. Ninja also sells the glassware as microwave and freezer safe and describes it as PFAS-free, and the snap-lock lids mean the dish you cooked in becomes the dish you store leftovers in.