Plantains undergo a tremendous transformation from green to super-ripe, just like bananas. They can be consumed at different stages of ripeness. When green, they are very starchy and not sweet. As they ripen, they become sweeter and softer and can be used in both sweet and savory preparations. For this dish, you are meant to use very ripe plantains that should be nearly all black. The level of sweetness in the finished dish will depend entirely on the stage of ripeness with the plantains.

Slice the plantains on a bias, which means on an angle. This type of cut will yield more surface area for the plantains to achieve a crispy, caramelized texture on the outside.

Air fryers vary widely in terms of capabilities, capacities, and basket styles. It's important to acknowledge this variation when it comes to any recipe for the air fryer. You might need to adjust the cooking times based on your air fryer. Additionally, if you have a smaller air fryer, you might need to cook in batches. Remember to avoid overcrowding the basket, allowing ample space between the plantains to promote proper air circulation and achieve crispy perfection.

Sweet plantains are best served immediately; while they won't retain their crispness upon storage, they're still delicious and reheated within 2-3 days in an oven or toaster oven.