You can harvest your cabbage more than once though, if you leave a few lower leaves behind you'll be rewarded with some, uh, well my wife calls them baby cabbages and I don't know the technical term, so we'll go with that. Each cabbage head that you harvest should net you four to six baby cabbages. It usually adds up to provide the same amount of food as the original cabbage head. I like them better actually. They're more tender.