The hot air fryers tested by Stiftung Warentest not only had to fry fries, but also bake buns and small cakes, and brown grilled vegetables and chicken drumsticks. The best air fryers deliver appetising results, including inexpensive models. Five of the mini ovens can make very good or good fries, crispy and tasty...

The double-stack model is another innovative model from Ninja. It is aimed at people who cannot fit a conventional hot-air fryer with two drawers on their worktop. Thanks to special dividers, the cooking space in each drawer can be doubled. So there is even more space. The Ninja Double Stack XL is fast and efficient, but we found the cooking performance a little too uneven.