Pointed cabbages can be kept 4-5 days in the refrigerator. If blanched, you can also freeze them. To clean them, you have to remove the outer leaves and rinse them under running water. Cut them into four parts and remove the white core and then slice it. You can eat them raw, in thin strips, to enrich a salad. You can cook them in a pan in thin slices for 15 minutes, or stew them for an hour with water and wine. If you prefer, you can cook the slices in an oven at 200° for 20 minutes.