1, the oil temperature is not high enough: if the oil temperature is not high enough, sweet potatoes will easily absorb oil when fried, and will not become brittle easily. You can try to raise the oil temperature and shorten the frying time, or try to fry the sweet potato strips with medium and small fire first, and then fry them with high fire until they are golden brown after the surface is dry.

2. The sweet potato slices are too thick or too thin: Too thick or too thin sweet potato slices can easily affect the frying effect. Generally speaking, sweet potatoes are best cut into pieces of about 5-6 mm.

3. Insufficient flour consumption: Insufficient flour consumption will also affect the crispness of sweet potatoes. You can appropriately increase the amount of flour, so that the sweet potato slices are evenly coated with a layer of flour.

4, the sweet potato itself is not fresh enough: choose fresh and delicate sweet potato, it is easier to fry the crispy taste.

5, frying time is too long: frying time is too long, sweet potatoes will become too dry, which will easily affect the taste. It is suggested to master the appropriate frying time and not over-fry.