The next step is to pack the salt and cabbage mixture down into your crock. The brine should cover the kraut completely. If there is not enough brine to cover the cabbage, you need to massage the cabbage some more. When you are done packing, spread a sheet of cheesecloth across the top so that, later, when a layer of scum or moldy residue appears on top, you can easily remove the cheesecloth, rinse it off, and replace it. Then place the fermentation weights on top of the cheesecloth; these weights will keep the cabbage submerged in the brine. Finally, cover the crock with a top. We have wooden fitted tops with handles, while my stepfather uses a flat piece of plywood and a brick. Either will work.