1, thirty minutes to two hours.

2, the time to soak fern root powder is related to the temperature of the water, with hot water soaking, you need to soak for half an hour, with cold water soaking, you need to soak for about two hours, soak and soften. Softened fern root noodles need to be put into the hot water to cook until there is no hard center, fish out of the cool, add salt, soy sauce, sugar, vinegar cold can be. If you like to eat spicy fern root noodles, you can add a moderate amount of millet chili.