First, prepare a pickle jar. There is a jar that is specially used to make sauerkraut, and you have to buy a dish that Sichuanese call green vegetables, which is also specially used to make sauerkraut. After preparing these two things, there is another most important thing. If you want to make sauerkraut with authentic Sichuan flavor, you have to ask Sichuanese who have kimchi at home to serve 2 bowls of pickle water, so that the pickled vegetables will be more fragrant. If you can't get it, you can only use salt water instead. The salt should be boiled. When it's cold, you should start to put things in the jar. Put the cold salt water in the jar first, then put the vegetables in it. At first, soak them less. After soaking more times, there will be more and more water. Then, add ginger, pepper and pepper, cover the lid and put it on for a few weeks, and Sichuan-flavored sauerkraut can be baked.