Northeastern people in the winter are doing something?

Before the winter, the Northeast people must do one thing is to stock up on vegetables, many southerners may not understand, in fact, because of the Northeast's winter snow, the weather is relatively cold, supplies are also relatively scarce, so a long, long time ago, the Northeast people will stock up on vegetables to maintain winter supplies, the main hoarding of vegetables is cabbage and green onions. Northeastern people in winter another custom is that every family will do sauerkraut, sauerkraut should be a kind of dish specially made in the northeast, to the late winter will be stewed with sauerkraut and pork and blood sausage, this is the famous Northeast sauerkraut stewed with pork, is the Northeast people especially like a dish.