Raw potatoes shouldn’t be frozen.
Murphy said that raw potatoes do not freeze well. If freezing a soup, stew, stew or other dish containing potatoes, its best to leave the potatoes raw and cook them when you are ready to eat the dish. The other option is to add the potatoes into the dish after it’s thawed out.
“In a raw potato, the water and starch don’t freeze well so you just get a mealy, grainy, bad tasting mess,” said Murphy.