The air fryer works like a convection oven and sits on your countertop. It uses circulating hot air - and some oil if you choose - to cook and crisp the food in the basket inside. You can use it without adding any oil, or you can add a little, which Plotkin says generally amps up the flavor. You'll also want to be careful not to overdo it. The air fryer is a healthier alternative to deep frying,...