I've used the EasiYo[TRADE MARK SIGN] Yoghurt Maker, no need to plug it in it uses boiling water to keep your milk warm, i've never bothered with using powdered starter i just buy a small tub of good quality plain youghurt with live cultures in to start things off then keep a small tub back from each batch to start the next lot off. I tend to use just about any soft fruit my local asda has reduced in price, rasberrys , blueberries mangos make a nice yoghurt as well as rhubarb, blackcurrants, redcurrants, from our garden when in season