While this indoor grill-slash-air fryer from Ninja can grill, fry, roast, bake, dehydrate, and broil, it’s its built-in smart thermometer that help you achieve perfect doneness. However, there is no right or wrong size, it’s all about what’s suitable for you, your family and your cooking. So whether that's frozen foods, mini pizzas, or even gnocchi and ravioli - it can all be cooked in an air fryer. You can even make fudgy brownies in an air fryer, in less time than it takes in an oven. This toaster oven air fryer variety offers six other cooking functions and a whole lot of space. It delivers crispy, delicious air fried food and some great results with other settings. Some models, like Ninja Foodi Dual Zone, have a second cooking compartment that allows you to cook two different types of food (at different temperatures) at the same time, so you could make steak and chips without having to mix them together. See our guide to how to buy the best dual air fryer. Preset cooking programs

Though you can find other air fryers with two cooking compartments, the Ninja 12-in-1 Smart Double Oven Air Fryer is one of the very few, if not the only, oven-style air fryer to have two ovens. Each one has its own set of functions, six each to be specific, so you can toast some garlic bread on top while cooking a frozen pizza on the bottom. And, thanks to the Smart Finish feature, it takes just a press of the button to have both compartments finish cooking at the same time. The Ninja Woodfire Outdoor Grill is designed for cooking outdoors – but, surprisingly, it’s electric. So in addition to being a grill and smoker, it can also air fry, roast and bake. Its clever self-igniting woodfire smoke box uses convenient wood pellets to create smoky flavors just like cooking over a wood or charcoal fire.All this versatility typically comes at a higher price, so it's worth considering if you'll use all the features before spending the extra cash. During our review, we found that the Smart Cook System achieves perfect doneness levels for different types of meats. This can be done by selecting one of four different protein settings and using the Foodi Smart Thermometer, which sits on the side of the appliance when not in use. The Smart Cook System will then monitor the internal temperature of the meat via the thermometer, and detect when the meat is finished cooking per your settings.

With most air fryers, you can set the temperature you want the food to cook at. Typically, you can choose anything from 80°C to 200°C. How much do you need to spend to get a good air fryer?Additionally, larger air fryers come with better functions, features, and accessories suited for baking, roasting, grilling, frying and more. The extra space of such air fryers makes it possible to bake bread, cook pizzas, and smaller cakes. It has a larger overall capacity than other Instant air fryers. However, it's worth remembering this is split across two frying baskets, so each basket holds a slightly smaller amount of food - meaning it won't be suitable for larger homes. The largest air fryer available is a monstrous 16-quart appliance called Big Boss. It’s ready to cook an entire turkey in one session. The Big Boss air fryer weighs close to 15 pounds and is capable of cooking a 3-course meal for two persons at once. Philips, for example, state that their HD9240 model has a food capacity of 2.65 pounds, which, according to their product description, equals 3.5QT. The larger 4QT model can hold up to 3 pounds of food in one session.