How many ounces? I normally use 4 OZ, cook for 60 sec, stir, heat for 30 sec, stir, heat for 30 sec stir again. I only cook 4OZ for 2 minutes and no longer in the microwave that I use on the initial heat. Remelting sometimes takes longer, but not much. Remember white is a touchy color when heating, the more times you stir and keep the heat of the plastisol equally mixed the better the results.