Candle in Coca-Cola

Are your electricity cut? You don't have a kerosene lamp (of course you can also use a special wax.) Then we came up with a super idea. Candles, Coca-Cola bottles and needles are required. You pin the locations of the Coca-Cola bottle with a needle. Then you light a candle and put it in the bottle of Coca-Cola. So you can use it until it comes with electricity.