Depending on the power of your microwave, you will have to adjust. (eatpicks.com)
Depending on the power of your microwave, this could take up to 3 minutes. (cookingwithbooks.net)
My third and final secret to success: Adjusting the power of your microwave to approximate 1000 watts by microwaving at a reduced power level if necessary. (glutenfreeonashoestring.com)