Start by cutting the cabbage lengthwise into 2 pieces and removing the outer leaves. Heat the oil in a frying pan and fry the cabbage on both cut sides at high heat. Season the cabbage with salt and pepper, add the butter, and cover the pan with a kitchen towel. Moisten the kitchen towel with water around the edges to seal it tightly. This allows the cabbage to cook/steam in the butter. After about 20 minutes, remove the kitchen towel and add the lemon juice, white wine, and broth. Let it simmer for another 5 minutes, and the cabbage is ready to serve. Optionally, cut the cabbage into 2 more pieces and serve immediately.