No matter what the type of cabbage is, you have to wash it thoroughly. If you’re going to cook cauliflower, which is actually in the same family of cabbage, you need to clean all the nooks and separate it into pieces. If you want to cook red or white cabbage, you have to remove the upper 2 layers as they may hide dirt and dust. To get rid of bugs and bacteria, put your cabbage in a sink filled with water, add some vinegar, and leave for a few minutes. Then rinse the cabbage with clean water.