Boil
Bring a very large pot of salted water to a rolling boil. Using a sharp knife, cut a deep cone around the core of the cabbage to remove it. Carefully lower the whole cabbage into the boiling water, core-side down. Blanch for 3–4 minutes until the outer leaves begin to soften and turn translucent. Remove the cabbage, let it cool slightly, then gently peel off the softened outer leaves. Repeat the blanching process, peeling off more leaves each time, until you have about 20–24 usable leaves or the cabbage is too small to continue. Trim any thick central veins from each leaf with a sharp knife, being careful not to tear them. Set aside.
