Related Clues:

• Wedge in a bottleneck?
• Guacamole ingredient
• Fuel source
• Natural fuel source
• Fuel from a bog
• Moss used as fuel
• Sour fruit
• Tom Collins ingredient
• Moss material
• 7-Up ingredient
• See 90-Across
• Key pie ingredient?
• Ade flavor
• Drink garnish
• Vegetable fuel