Why do potato tubers become sweet after frostbite?

Potato tubers become sweet after frostbite due to the fact that at low ambient temperatures, the starch in the tubers turns into sugar. Figuratively speaking, when the tuber is alive, it is saved from the cold. If the temperature drops very sharply in the mass stored in the tubers to minus marks, then nothing can be done. When thawing, the tubers become very sweet, soft, the juice will drain from them, the pulp will become completely unusable.