There are various cooking styles for bean curd skin. Tofu skin roll is a common way of cooking bean curd skin. Fermented bean curd is easier to digest than unfermented bean curd. The liquid of the bean curd turns into ice. His father also operated a bean curd shop. Fermented bean curd is generally sold in small glass jars. Still, many place Liu An as the inventor of both bean curd and soy milk. Bean curd make from beans and yellow wine. According to family lore the wealth of the family grew from selling bean curd. Lufu () is a type of fermented bean curd from Yunnan Province in Southwest China. This time, the bottom three in the second round needed to make bean curd. Fermented bean curd can be divides to three categories that are red, white and green. The noodles are often served with dried bean curd, Campanulaceae, and Pollack, amongst other ingredients.