Up and down fire mode, hot air circulation mode, steaming and grilling mode, etc.

1. Top and bottom fire mode: This mode is a more common oven mode and is suitable for most ovens. This mode allows the sweet potatoes to be heated evenly and roasted more fragrantly. This mode can also make the surface of the sweet potatoes slightly crispy and taste better.

2. Hot air circulation mode: This mode is suitable for ovens with hot air circulation function. By releasing even heat, the mode makes the temperature inside the oven more uniform, allowing the sweet potatoes to be heated more evenly and roasted more evenly. This mode can also improve baking efficiency and shorten baking time.

3. Steaming mode: This mode is suitable for ovens with steaming function. This mode can make sweet potatoes softer and waxier, effectively preventing surface scorching, and is suitable for those who like a soft and waxy taste. The sweet potatoes baked in this mode have a moist texture.