Not exactly super

The ribbon is a nice gimmick, but it is questionable whether you need it. The simple method, the vial to keep the lip to feel to see if it's too hot, it does, does not cost anything and goes without any aids.

Otherwise, the ribbon does what it should, but is not easy to use because it arbeitet- analogy it turns green in various gradations, and the user needs to gain experience when the right tone is taken. Possibly if it were a thermometer with degree display still better. The idea behind it I find not bad in principle and who is on pretty gimmicks, will have his pleasure.