[header] How to core a cabbage [title] Know which types of cabbage to use this method with. [step] This method should be used with round heads of cabbage, the most common being green cabbage, red (or purple) cabbage, and savoy cabbage. [substeps] Note that there are some similarities between this method and the standard method used for cutting long cabbages, but there are a few small difference, as well. 
[title] Cut off the stem of the cabbage head. [step] Use a sharp kitchen knife to trim off any portion of the stem that extends below the bottom of the cabbage head.