Related Clues:
- Unsustainable but trendy fuel source
- It gives punch to punch
- Biofuel option
- Gas alternative
- Fuel that yields a net energy loss
- Renewable fuel on some farms
- Type of biofuel
- Biofuel choice
- Fuel derived from fermenting organic waste
- Gasohol ingredient
- Gasoline alternative
- Environmental summit topic
- Intoxicating agent
- Kind of alcohol found in Athlone
- Kind of alcohol from Athlone