Nowadays, most fireplaces make use of ethanol. The advantage of these kinds of flames lies in the fact that it does not emit sparks, dusty soot or even harmful gases. You do not even need to clean up the place and can ignite it once more when you feel its need.
Ethanol Fireplace Logs have come a long way since they were first introduced. Remember the first generation of gas logs? They were large clumps of cement made to look like a pile of logs. There were holes drilled in to them and the flames would come up through the holes. They were not very realistic but they served a purpose.
ethanol fire log insert image via fireplacemodern.us
ethanol fireplace log insert image via fireplacemodern.us
ethanol fireplace logs image via fireplacemodern.us