Visually, the Twistfire is very well done, an ingenious design. What bothers me a bit that at each lighting and refilling of ethanol a pane of glass must be removed. A technique for pushing would have been perfect. The Twistfire also has quite a weight, which makes it not so easy -As for sale Video dargestellt- it just so to make from inside the patio and back. There is a slight ethanol odor is perceptible, me personally do not mind. A bottle of Bio-ethanol is enough for about 2.5 hours burn time, the end of the period towards the flame is then slowly lower. The flame looks great, slightly turned, so probably the name Twistfire :-) One should really make sure "good ethanol" to be used with a purity of 96.6%, as otherwise can clog the metal fibreboard and Twistfire then ever no longer works. However, this comes at a price: a bottle costs just over 2 EUR, so no very cheap pleasure, if you use the Twistfire frequently. I had often in use, when it was so cold in May 2013. The temperature in the room was warmer by an average of 2 ° C!