Related Clues:

• Burger layer, perhaps
• Ash, e.g.
• Christmas symbol
• Squirrel's hangout
• Madrone or magnolia
• Salsa bit
• Genealogical diagram
• Leek's kin
• Oak or pine
• Vidalia, e.g.
• It has bark but no bite
• Layered vegetable
• Common chutney ingredient
• It may bring a tear to the eye
• Hierarchical chart