Prepare potatoes: Scrub the potatoes and dry them well with kitchen towels. Rub with olive oil. Sprinkle with salt and rub again. Pierce with a fork all over.
Preheat the air fryer if necessary, according to the machine's instructions.
Cook: Place the potatoes in the basket and cook on 200 degrees Celsius/ 400 degrees Fahrenheit for about 40 to 50 minutes depending on the size. Turn them halfway using tongs. Make sure they are perfectly soft by piercing them with a fork or knife.
Serve: Remove from the air fryer, split in the middle, fluff the insides a little with a fork. Top with a knob of butter or a dollop of sour cream. Sprinkle with more salt, some pepper, chopped chives, and serve immediately.
Make sure to use starchy potatoes, like Russet.
See the blog post for more serving suggestions.
Nutrition is calculated for 1 baked potato topped with 1 teaspoon butter. 1 potato served with 1 tablespoon sour cream has about 250 calories.