The citrus oil is regenerative energy, and can substitute petrifaction fuel.
Bergamot is a lovely citrus oil that is also used in the making of Earl Grey Tea.
Keep your citrus oils away from heat and direct sunlight and in tightly closed containers. Your fridge would be great.
As for Coke Classic, well, the formula can be found on page 43 of Poundstone's book, but it includes vanilla extract, citrus oils, and lime juice flavoring.
