Possible Clues:

• Shelter over king and national emblem
• A town in Staffordshire, or a mountain in Antarctica
• Garlic cousin
• The Welsh vegetable?
• Bulb in soups
• Veggie in zeytinyagli pirasa
• Vegetable in spilling of beans we hear?
• Onionlike soup vegetable
• Scottish soup staple
• Fish served up on top of king-size vegetable