To determine how far the carrot sweet potato sugar should be boiled:

Wash the pot, add sugar, add a little water, and simmer slowly. Put a little water in the pot, add rock sugar (white sugar), and slowly cook until the rock sugar melts, and large bubbles begin to appear after it melts. The large bubbles slowly turn into small bubbles, and the color gradually turns yellow. Keep stirring along the way. When the sugar slowly turns yellow, turn down the heat and use chopsticks to test whether it meets the requirements. When the color turns light brown, dip chopsticks into the syrup, quickly immerse it in cold water, and take it out. If the sugar solidifies and is chewy and hard, it means it has been cooked successfully.

Judge whether it is cooked well:

Take a chopstick, quickly dip it in sugar water, then quickly put it into cold water to cool down, and taste it to know whether the sugar is cooked properly.

At the beginning, the sugar will quickly dissolve in the water, which is definitely not good; after a while, the sugar will solidify, but it will taste stringy and sticky to the teeth, and it is not cooked enough at this time; after a while, insert chopsticks into the water and fish it out, and the sugar will become thin quickly. If it crystallizes and tastes hard and crisp, the sugar is ready!