Scrape the skin off the sweet potato and wash well.
Cut the sweet potato into evenly sized chunks so that they don't cook unevenly.
Brush the serving plate with oil to prevent the sugar from sticking to the plate. Brush with oil, so the sugar doesn't stick to the plate, making it easy to clean.
Heat the oil in the pot, and put the sweet potato into the frying pan. Fried the sweet potato and cooked it thoroughly, with a golden appearance.
Pour out the oil of the fried sweet potato in the pot, leaving a little oil at the bottom, put in the sugar, add 1 teaspoon of water, during heating, stir it with a spoon, and melt the sugar with a small fire.
After the sugar melts, first a big bubble, and then a small bubble, until all the water evaporates, the syrup gradually become thick, the bubble gradually becomes small, and the color of the syrup turns yellow, it is almost OK, the sugar is cooked.
Immediately put in the fried sweet potato, quickly stir well, make the sugar evenly stick to the sweet potato, turn off the heat, put in the plate. With a bowl of cold water, while it is hot, you can pull out such a long sugar silk. When you eat, dip the sweet potato in the water, so it won't stick your teeth.