Tin foil is recommended for baking sweet potatoes in the oven, and tin foil is also recommended for ovens with hot air function for the following reasons:

When baking, sweet potato sugar is easy to seep out and drip on the baking tray, which brings cleaning problems, so it is best to pad a layer of tin foil on the baking tray.

There are usually two ways to use tin foil when baking sweet potatoes:

1. Bake sweet potatoes with tin foil: The advantage of this is that it can reduce the water loss during baking and prevent the baked potatoes from being too dry, and the taste is somewhat similar to that of steaming.

2. Put the tin foil directly on the baking tray and bake the sweet potato naked: the baked sweet potato is dry and burnt, and the sugar juice overflows, which makes people drool. This is also the way that most people use at present.

Tin foil has five main functions:

Prevent food from sticking to the baking tray;

Prevent food from sticking to dirty things;

Easy to clean the baking tray;

Some foods are baked with spices, and the stuffing is afraid of being scattered and wrapped in tin foil;

Prevent water loss and keep fresh and tender.