Quartering a cabbage offers an easy solution to removing the core. To do this, cut the cabbage vertically in half through the core with a large knife. Then cut each piece again through the core. Cut out the portion of the core from all four pieces by slicing around it.
Donna Pierce. “From the Test Kitchen.” Chicago Tribune. 31 March 2004. <www.chicagotribune.com/features/food/chi-0403310118mar31,1,7528414.story> (31 March 2004).