NOTE:different power and design of the microstove will lead to different heating time.if the warm plate do not hot enough after heating upon the above minutes, you can heat a bit more to reach the tempreture you need. 1HEAT PRESERVATION WHILE HEATING PUT THE MARBLE SIDE UP,HEAT AS FOLLOWS, POWER OF THE MICROSTOVE 600-900W 3-5MIN 1000-1500W 2-4MIN CAUTION:the tempreture range is +130Cto-20C.over heat will lead to melting of the plastic holder. please do not touch stone on bottom of the plate when hot .always hold by handles 2,HEAT PRESERVATION WHILE COOLING Freeze it for more than 4 hours then take out ,put the drink you want cooling on the marble