Possible Clues:

• Vegetable also known as the turnip cabbage
• Bulbous vegetable
• Bring home the bacon for this ¿ it¿s okay backing Hamas leader and Blair freely
• Porter, say, sent back pub's current variety of cabbage
• Bring home the bacon for this? It's okay backing Hamas leader and Blair freely!
• Cabbage with a turnip-shaped bottom
• Chancellor and Prime Minister once limited vegetable
• Cabbage served by short bloke with hair in a tangle
• Vegetable with potassium? Cooks boil hard leaves off end
• Variety of cabbage with edible leaves and turnip-like stem