Possible Clues:

• Béchamel seasoning
• Hard seed of tropical tree grated as spice
• Fragrant tropical seed ground as spice
• Mace bearer?
• Men gut this herb badly
• Spice Girl Hazel perhaps initially
• Margaret might get dotty, but she could get greater, by the sound of it
• Spice Girls' debut, having first met UN Assembly
• Spicy seasoning - hard fruit for little Margaret?
• Hard, aromatic seed