Personally, I don't own an air-fryer (or an Instant Pot, Pressure Cooker, Slow Cooker, Rice Cooker, Vita-mix, Spiralizer, etc etc) nor do I have any plans to get any of them.
The reason is, I don't think any special gadget, tool, pot or pan is required for success on the program. The simpler we keep things, the more likely we are to follow them. Sure, people find some fun in exploring these types of products and what they can do, but to me, the real fun is being able to achieve decades of adherence, results and success. I can put my favorite meals together in 10-15 minutes including clean up and I have never found a gadget that can help me improve upon that.
But that's me.
If it works for you, great. Enjoy.
![smile :)](./images/smilies/smile.gif)
Yes, all these "gadgets" can be used along with the principles of calorie density but the best cooking methods to preserve calorie density are water-based like steaming, boiling, water sautéing. This doesn't mean you can't microwave, bake, broil, roast, etc but those methods all dry out your food. Some drying will have little to no impact on calorie density, but eventually it can increase the calorie density to a point that matters (boiled potatoes to crispy potato chips)
In regard to cooking potatoes and calorie density, you may find this article helpful
viewtopic.php?f=22&t=48112In Health
Jeff