Prepare the ingredients: sweet potatoes, vegetable oil, and sugar.

Trim the ends of the sweet potatoes and peel them. Peeling is optional.

Cut the sweet potatoes into bite-sized cubes.

Microwave the sweet potato cubes for 3 minutes to soften them slightly.

Dry the sweet potato cubes thoroughly and fry them in vegetable oil over medium heat until golden brown.

Remove the fried sweet potatoes and place them on a paper towel to drain excess oil.

Melt sugar and vegetable oil in a pan over low heat without stirring. Tilt the pan to mix gently.

Once the sugar turns transparent and light brown, quickly coat the fried sweet potatoes with the melted sugar.